Our Therapists - Onyx Therapeutics

A Collective of Experienced Therapists

Meet the Onyx Team

Andrea Harris

Therapist (BA, RP)

Virtual Only

Andrea’s gentle, compassionate, and easygoing nature creates a safe and welcoming space for open, honest conversations. She takes the time to truly understand each person’s unique strengths and values, offering thoughtful guidance through life’s challenges with empathy and care. With over 15 years of clinical experience, Andrea is dedicated to building meaningful, supportive connections with her clients.

She works with individuals aged 15 and up, supporting a range of concerns including anxiety, depression, stress, and behavioural addictions such as gambling, gaming, and technology use. Andrea brings both expertise and a genuine commitment to helping people navigate these struggles and build healthier, more fulfilling lives.

As a facilitator-in-training for Mindfulness-Based Stress Reduction (MBSR), Andrea weaves mindfulness techniques into her work, helping clients cultivate greater self-awareness and resilience. Outside of her clinical work, Andrea values quality time with her family and prioritizes self-care, recognizing the importance of nurturing her own well-being.

Jessica Beddows

Therapist (MSW, RSW)

Jessica is a Registered Social Worker with over 14 years of experience supporting children, youth, adults, and families. She understands that seeking therapy can feel challenging at any stage of life, and she is passionate about creating a safe, collaborative space where clients feel understood and supported.

Jessica has extensive experience working with children and families and values involving caregivers in the process so that everyone feels empowered and connected. At the same time, she also works closely with adults who are navigating stress, life transitions, grief, or relationship challenges. Across all ages, she prioritizes building a strong therapeutic relationship where trust and openness can naturally develop.

In her practice, Jessica integrates strength-based and narrative approaches with Cognitive Behavioural Therapy (CBT) and Dialectical Behaviour Therapy (DBT). She helps children build coping skills and resilience, supports families in strengthening communication, and works with adults to process challenges, develop strategies for change, and move toward holistic growth and wellbeing.

In her personal life, Jessica prioritizes self care, physical exercise and spending quality time with her family and dogs.

Sylvia Amorim-Sexton

Therapist (BA, RP)

With over 20 years of experience, Sylvia is a compassionate and seasoned psychotherapist dedicated to supporting individuals through mental health and substance use challenges. She creates a warm, welcoming space where clients feel safe, truly heard, and empowered to explore their experiences and move toward lasting healing.

Sylvia works from a strengths-based, trauma-informed perspective, helping clients reconnect with their inner resilience and make meaningful, sustainable change. She is particularly skilled in working with adults navigating life transitions, emotion regulation, ADHD, depression, anxiety and grief —always with a collaborative, client-centered approach. Through life’s uncertainties or the search for deeper balance, Sylvia offers grounded support, empowering clients to navigate challenges with clarity, confidence, and renewed strength.

Her practice is grounded in evidence-based therapies including Cognitive Behavioural Therapy (CBT), Dialectical Behaviour Therapy (DBT), Motivational Interviewing (MI), Mindfulness, and Acceptance and Commitment Therapy (ACT). With care and intention, Sylvia tailors her approach to meet each client’s unique needs, goals, and pace.

Outside the therapy room, Sylvia finds joy in the simple pleasures of life—spending time with her loved ones, exploring nature on long walks and hikes, and nurturing her creativity through art.

Mark Grant

Therapist (MSW, RSW)

As a seasoned therapist with over 30 years of clinical experience, Mark brings deep compassion, expertise, and wisdom to his work. He supports individuals in navigating the emotional, psychological, and situational challenges that life can present. From trauma and anxiety to depression, relationship concerns, self-esteem issues, grief, stress, and substance use, Mark will meets his clients with respect, care, and genuine curiosity.

Mark draws from Narrative Therapy, Cognitive Behavioural Therapy (CBT), and Solution-Focused Therapy to help clients explore their experiences, recognize patterns, and open up new possibilities. He believes in the power of story and works alongside clients to help them feel more in control of their lives—reminding them that they are enough, just as they are.

In addition to his clinical expertise, Mark brings the insight that comes from lived experience. As a husband, father, son, brother, and friend, he has walked alongside loved ones through their own struggles, deepening his understanding of the human experience.

Outside the therapy room, Mark finds balance through physical activity and connection with nature. He enjoys playing squash and soccer, working out, and spending time canoeing and backcountry camping with his family during the warmer months.

Lauren Voore

Therapist (MSW, RSW)

Lauren is a dedicated, empathetic, and energetic therapist who is passionate about fostering a warm, connected, and supportive therapeutic relationship. Her grounded presence and genuine care help clients feel safe, accepted, and encouraged to be their authentic selves in therapy.

With over seven years of experience working in community-based mental health, Lauren has supported individuals from diverse backgrounds through a wide range of emotional and psychological challenges. She has a special interest in working with teens and adults navigating depression, anxiety, self-criticism, people-pleasing, relationship difficulties, and substance use.

Lauren brings a warm, collaborative, and nonjudgmental presence to her work, helping clients deepen their self-understanding and develop more effective ways of coping. She supports individuals in identifying the emotional patterns that contribute to their distress—whether that means setting boundaries in relationships, managing intense emotions, or exploring their relationship with substances. She offers a safe and supportive space for reflection, growth, and healing, no matter where someone is on their journey.

Lauren draws from a variety of evidence-based modalities, including Motivational Interviewing, Cognitive Behavioural Therapy (CBT), Dialectical Behaviour Therapy (DBT), and Compassion-Focused Therapy (CFT). She tailors her approach to each client’s unique needs, helping them build insight, resilience, and practical tools for change.

Outside the therapy room, Lauren values self-care and connection. She enjoys going for walks with her dog, meditating, reading, spending time in nature, and being with loved ones.

Sasha Reback

Therapist (RP)

Sasha is an experienced psychotherapist with a decade of clinical experience which has included working within hospital, community, and private-practice settings. Sasha has a special interest in supporting adults with ADHD, focusing on challenges like impulsivity, procrastination, emotional dysregulation, rejection sensitivity, and masking. She is equally passionate about supporting individuals struggling with anxiety and low mood, burnout, grief, life transitions, people-pleasing tendencies, chronic pain, and addiction.

Sasha prioritizes trust and connection as the foundation for meaningful change. She emphasizes transparency and self-compassion, helping clients confront the patterns that keep them feeling stuck while building self-awareness, effective coping strategies, and a stronger sense of identity.

She takes a client-centered, integrative approach, drawing from modalities such as Emotion-Focused Therapy, Narrative Therapy, Cognitive Behavioural Therapy (CBT), Dialectical Behavioural Therapy (DBT), Motivational Interviewing (MI), and Solution-Focused approaches to support each client’s unique needs.

Sasha’s warm, collaborative style encourages creativity, self-exploration, and personal growth. Outside of work, she enjoys playing guitar, spending time with her pets, and listening to audiobooks.

Jaylyn Farrell

Therapist (MSW, RSW)

Jaylyn is a dedicated clinician who is deeply committed to creating a safe, comfortable and relaxing space where clients are able to feel supported and validated. With 8 years experience working with children and young adults, she brings a compassionate, relatable and warm energy to her practice. Jaylyn specializes in working with clients who are facing an array of mental health challenges, including anger management, anxiety, depression, self-esteem and family relationship concerns. She works from a collaborative, strengths-based approach and uses a variety of modalities within her practice including cognitive behavioural therapy, dialectical behaviour therapy, solution-focused therapy and mindfulness.

Jaylyn also has a background in working with children and youth diagnosed with Autism Spectrum Disorder and is well equipped to empower and support each client with their unique needs. For self care, she enjoys spending time with her friends and family, getting lost in a good book and cuddling up with her cat.

Kristen Maynard-Dingle

Therapist (MSW, RSW)

Kristen brings a wealth of experience into the therapy room. Her calm, welcoming demeanour helps clients feel at ease to express and share their biggest fears, hopes and dreams. Kristen has experience using a variety of modalities to treat an array of presenting concerns, including depression, low mood, anxiety and stress. She also has a special interest in working with people experiencing grief and brings a strong expertise in providing grief therapy to people of all ages including children, teens and adults.

Kristen is skilled in connecting with people presenting with a range of transitional experiences; relationship changes, loss, and aging. Kristen draws on her training from a solution-focused and person-centred approach with the client as the expert in their journey. For self-care Kristen enjoys spending time with her family, trips to the library, reading books and walking her dog.

Elaine Morra

Therapist (MSW, RSW, RMFT)

Elaine brings warmth and energy to her practice, as well as an incredible wealth of experience from her 30 years of working with a wide variety of people. Elaine practices primarily with individual adults, and is a Registered Marriage and Family Therapist. She has expertise in the treatment of anxiety, depression, grief, trauma and relationship related concerns. Elaine draws from various therapeutic modalities including Motivational Interviewing, Solution Focused Therapy, Cognitive Behavioural Therapy (CBT), Acceptance and Commitment Therapy (ACT), and EMDR.

Elaine encourages her clients to explore ideas for personal growth, areas of change, and improved coping. In her personal time Elaine enjoys time with her family and friends, pets, and being around water activities. She loves reading, movies, photography, chocolate and thoroughly enjoys a good cup of tea.

Amanda Nauth

Therapist (MSW, RSW)

Amanda embodies warmth, empathy and a passion for understanding people. She specializes in working with adults, and teens over 16 years old. Amanda has many years of experience working with individuals in clinical mental health settings. She is passionate about working with people experiencing anxiety, depression, stress, self esteem challenges, life transitions, family issues, and intergenerational trauma. Amanda brings a comprehensive approach, pulling from CBT (cognitive behaviour therapy), DBT (dialectical behaviour therapy), Solution Focused therapy, and EFT (emotionally focused therapy) to bring a tailored style of treatment to each of her clients.

Amanda understands how important it is to work with people from an anti-oppressive lens, and is passionate about addressing gaps and barriers in mental health services to best support racialize individuals. Amanda has an adventurous side, she loves trying new foods, walks at the lake, and also enjoys down time with friends and family, and a nice cup of tea.

Daniela Boeri

Therapist (MSW, RSW)

Daniela’s approach is embedded in a respect for diversity and authenticity. Guided by compassion and openness, Daniela creates a collaborative, respectful space where clients can recognize and reconnect with their strengths and values. Daniela’s empathetic curiosity allows her to develop useful and meaningful conversations with clients in a warm and non-judgmental manner.

Daniela is specialized in working with people experiencing a variety of concerns including, depression, anxiety, grief & loss, parenting support, child/adolescent stress, life transitions, employment/school stress, and family conflict. She has extensive experience working in community settings and in the health sector, drawing from a variety of therapeutic approaches, including Narrative Therapy, Acceptance and Commitment Therapy (ACT), Cognitive Behavioural Therapy (CBT) and Solution-Focused Therapy.

For self-care, Daniela enjoys spending time with her kids, early mornings with a cup of tea, being in nature, and anything food related, like cooking and trying new foods.

Amanda Cappon

Therapist (MEd, RP)

Amanda’s enthusiasm for growth and self-improvement encourages meaningful conversations about important life transitions. Amanda believes in the development of self compassion as a means to strengthen our relationships with others, which contributes to an overall sense of wellness and connection. Amanda has over 12 years of experience in the mental health field, practicing in educational and community settings.

In her practice, Amanda draws on her training in person centered, cognitive behavioural (CBT), and emotion focused (EFT) therapies while maintaining a client centered approach. She has a special interest in working with young adults, specifically post-secondary students. For self-care, Amanda enjoys spending time with her family, playing ultimate frisbee or being in nature on a back-country camping trip.

Sarah Mogg

Offers Clinical Supervision

Therapist (MEd, RP)

Sarah’s natural ability to connect with people, quickly fosters a trusting therapeutic relationship and makes clients feel comfortable to open up and feel understood. Sarah has extensive experience and training using various therapeutic modalities including Motivational Interviewing, Cognitive Behavioural Therapy (CBT) and Dialectical Behaviour Therapy (DBT).

With over 12 years in practice, Sarah has developed a special interest in working with people experiencing low mood. Sarah’s self care practices include kayaking, spending time with her pets and catching up with friends.

Clinical Supervision:

Sarah Mogg offers Clinical Supervision services, providing guidance and support to professionals in the mental health field. With her extensive experience, she helps clinicians enhance their therapeutic skills, navigate complex cases, and grow in their professional development. Sarah’s collaborative and reflective approach ensures that supervisees receive thoughtful feedback, personalized strategies, and a safe space to explore challenges and deepen their practice.

Jaime Lee

Therapist (MEd, RP)

Jaime’s friendly and easy-going nature, naturally builds connection and trust in the therapy room. Her warmth creates an inviting, and collaborative space where clients feel safe and relaxed. Jaime’s strengths-based approach to therapy is centered around her belief that people have a wealth of knowledge and many skills that they can use throughout the change process. In her work, Jaime integrates strategies from different approaches such as solution focused therapy, narrative therapy, CBT, ACT and DBT, and brings over 20 years of experience in the mental health field.

Jaime is a highly skilled therapist and has worked in children’s mental health, addiction treatment, and community mental health settings. She has special expertise in working with young people (13-25 years) and has strong clinical expertise in working with those experiencing difficulty related to food and body (i.e, eating disorders).

For self care, Jaime enjoys spending time with her kids, doing Zumba, baking/enjoying her baking, and anything that engages her creative side.

Kathy Avayianos Adetuyi

Therapist (BA, RSW)

Kathy’s ability to honour individual uniqueness and strengths in a collaborative and respectful way, creates a safe and person-centered therapeutic relationship. She supports people in their journey of exploration, relevant learning and personal growth within a nurturing, safe and respectful space. Kathy is a thoroughly skilled clinician, who brings over 20 years of experience providing treatment to a variety of concerns; specifically, trauma, addiction, anxiety, depression, compulsive behaviours, grief and loss, and infertility. Her practice is informed by a variety of modalities including; CBT, DBT, CPT, ACT and Motivational Interviewing.

As a woman of colour and multi-ethnic background, Kathy also brings with her a culturally sensitive ability to engage in anti-oppressive work that includes the exploration of gender, sexuality and racialized experiences. Kathy has a special interest and expertise in working with people who have experienced trauma. For self-care, Kathy enjoys spending time outside gardening, landscaping and enjoying nature.

Karen Lewis

Therapist (MSW, RSW, RMFT-SQ)

With over 30 years of experience, Karen is a compassionate therapist dedicated to helping individuals and couples navigate life’s challenges with confidence and clarity. As a Registered Social Worker and Registered Marriage and Family Therapist, she integrates evidence-based approaches with a personalized touch to foster meaningful, lasting change.
Karen specializes in anxiety, depression, trauma, grief, relationship challenges, and life transitions. She supports clients struggling with self-worth, identity, guilt, anger, and stress—whether in their personal lives, at work, or in school. With advanced training in Mindfulness-integrated Cognitive Behavioral Therapy (MiCBT), she also helps individuals manage ADHD, OCD, panic, pain and self-regulation difficulties that impact mood and behavior.
Working with individuals 16 and older, as well as couples, Karen helps clients strengthen relationships, navigate intimacy concerns, and adjust to life changes. She also works with pairs of significant relationships—such as adult siblings or separated parents—to improve communication and foster healthier dynamics.
Passionate about holistic well-being and life balance, Karen is committed to creating a supportive space where clients can heal and grow. Outside of her practice, she enjoys meditation, walking, cooking, and spending quality time with family and friends.

Colin Dundas

Therapist (CYW, RP)

Colin has always been fascinated by relationships. He is particularly interested in what brings people together, how they navigate differences and how relationships become lasting. He values staying present without judgement and brings this into his work. Colin brings 25 years of experience working in the mental health field and currently specializes in couples’ therapy and relationship issues. He grounds himself with regular self-care practices, including running the trails at Heber Down Conservation Area and is open to taking his therapeutic conversations outdoors.

Samantha Carter

Therapist (MSW, RSW)

Samantha’s warm and personable manner creates safe, trusting and meaningful therapeutic relationships where clients feel understood, supported and hopeful. These relationships have helped to promote positive growth and change for her clients, in the areas that are most important to them. Samantha brings 10 years of experience providing therapeutic supports to school-aged children, adolescents and their families. Samantha’s practice is collaborative, strengths-based and client-centered. She draws upon a number of evidenced-based treatment modalities, including solution-focused therapy, cognitive behavioural therapy, dialectical behaviour therapy, narrative therapy and mindfulness practices.

Samantha believes that therapy can be an important part of self-care, and that therapy plays a pivotal role in overcoming challenges in areas where individuals feel stuck. Samantha values the presence of community in self-care; she is often found spending time with family and friends, being outdoors and making time to be physically active.

Please Note: Samantha is unable to see clients who are affiliated with the Kawartha Pine Ridge District School Board.

Shannon Brown

Therapist (MACP, RP)

Shannon’s open, authentic and empathetic presence creates a warm and welcoming relationship for her clients. Shannon emphasizes supporting and empowering her clients to gain the hope, insight, and skills needed to achieve their personal goals. She leans into a Cognitive Behavioural (CBT) framework to meet clients where they are, as they are, and creates individualized treatment options tailored to the unique needs of each client. Shannon is experienced in helping clients gain mastery over their trauma and PTSD symptoms, as well as assisting clients to reduce or eliminate the problem of anxiety in their lives. During her downtime, she enjoys reading, caring for her plants and her cats, and picking up new Arts and Crafts hobbies.

Arianna Boddy

Therapist (RP)

Arianna’s kind, empathetic and optimistic outlook inspires hopefulness and change for her clients. She brings a well rounded skill set, honouring her clients and their strengths. She draws on Solution Focused Therapy, Cognitive Behavioural Therapy, Dialectical Behaviour Therapy, and Emotion Focused Therapy; tailoring the approach to her clients’ needs.

Arianna brings a decade of experience working with youth and adults in the field of mental health and substance use. She is skilled in working with people experiencing anxiety, depression, trauma and relationship concerns. During her downtime, she loves spending time with her family, reading, cooking, working out and can often be found knitting.

Jacqueline Hebert

Therapist, Co-Owner (MNTCW, RP)

Jacqueline’s admiration of resiliency lends itself to empowering therapy conversations which highlight the strengths, values and preferences of her clients. Through her training in Narrative Therapy, Jacqueline has developed a creative way of understanding problems and their influence. She has worked in the mental health field for over 10 years and currently has a special interest in assisting people to reduce or eliminate the problem of anxiety in their lives. Jacqueline’s self-care practices include cooking, exercising and keeping a bouquet of fresh flowers in her home.

*Jacqueline is not accepting new clients*

Taylor Robertson

Therapist (MSW, RSW)

Taylor is a bright, warm, and engaging therapist. She brings a wealth of knowledge, expertise and clinical experience to her therapeutic practice. Taylor creates an environment where conversations flow easily, which allows her clients to feel understood and appreciated. She understands that individuals are unique, and is careful to tailor her approach to each person’s needs. As a therapist, she partners with clients to make meaningful changes in their lives through deep conversation and connection. Taylor has specific expertise in working with adult clients experiencing stress, overwhelm, and anxiety. She is particularly skilled and experienced in supporting clients navigating complex family and interpersonal relationship dynamics. She is also specialized in working with individuals and families through pregnancy, motherhood, postpartum, parenting and the continual adjustments of raising children. She’s especially interested in all the ways motherhood changes a person, their relationships, and their sense of self. Taylor finds joy in connecting with nature by being outside. She prioritizes spending quality time with friends and family as much as possible.

*Currently on leave, Taylor is not accepting new clients*

Heather Boswell

Therapist, Co-Owner (MSW, RSW, RP)

Heather’s warmth invites trust, safety and ease into the therapy room. She carries an appreciation and sensitivity for life’s challenges, which allows therapy conversations to be authentic, and evolving. Her practice is influenced by strengths-based treatment models. Heather has been practicing psychotherapy for over 10 years and has a special interest in working with young people and women. She grounds herself with regular self-care practices including yoga, team sports and making sure there’s always time for a laugh.

*Currently on leave, Heather is not accepting new clients*

Amanda Daniel

Therapist (MSW, RSW)

Amanda brings a unique warmth and passion for fostering genuine connections, creating a safe space where clients feel seen, heard, and empowered to make meaningful change. She partners with clients to help them realize their vision of a successful future, believing that therapy is a transformative tool for personal growth. Through her work, Amanda aims to strengthen relationships, enhance self-worth, and cultivate a robust sense of emotional self-efficacy.

Amanda is trained in Emotion-Focused Therapy (EFT) and Cognitive Behavioral Therapy (CBT), and integrates elements of Mindfulness Practice into her sessions. She specializes in supporting youth and adults aged 18 to 40, with a particular focus on new parents, individuals navigating grief, and those facing relationship challenges.

In her personal life, Amanda prioritizes self-care through hiking with her dog, enjoying time by the water, and journaling.

A Collective of Experienced Therapists

Andrea Harris

Therapist (BA, RP)

**Virtual Only**

Jessica Beddows

Therapist (MSW, RSW)

Sylvia Amorim-Sexton

Therapist (BA, RP)

Mark Grant

Therapist (MSW, RSW)

Lauren Voore

Therapist (MSW, RSW)

Sasha Reback

Therapist (RP)

Jaylyn Farrell

Therapist (MSW, RSW)

Kristen Maynard-Dingle

Therapist (MSW, RSW)

Elaine Morra

Therapist (MSW, RSW, RMFT)

Amanda Nauth

Therapist (MSW, RSW)

Daniela Boeri

Therapist (MSW, RSW)

Amanda Cappon

Therapist (MEd, RP)

Sarah Mogg

** Offers Clinical Supervision **

Therapist (MEd, RP)

Jaime Lee

Therapist (MEd, RP)

Kathy Avayianos Adetuyi

Therapist (BA, RSW)

Karen Lewis

Therapist (MSW, RSW, RMFT-SQ)

Colin Dundas

Therapist (CYW, RP)

Samantha Carter

Therapist (MSW, RSW)

Shannon Brown

Therapist (MACP, RP)

Arianna Boddy

Therapist (RP)

Jacqueline Hebert

Therapist, Co-Owner (MNTCW, RP)

Taylor Robertson

Therapist (MSW, RSW)

Heather Boswell

Therapist, Co-Owner (MSW, RSW, RP)

Amanda Daniel

Therapist (MSW, RSW)

Take care of your mental health & find balance with the help of our team.

Virtual Only

Offers Clinical Supervision