Who we are

Senta Counselling Services provides individual psychotherapy, psychological services and couples & family counselling to adults & teens in Barrhaven. In addition to a wide-range of counselling services offered, special focuses involve women’s wellness, teen mental health and anxiety management. Reduced rate counselling and sliding scale rates available for low income families or individuals who are unable to afford regular rate treatment. Video & telephone counselling available during the COVID-19 outbreak.

Cassandra Petrella of Senta Councelling in Ottawa Ontario

Cassandra Petrella, MA, C.C.C
Clinical Director & Registered Psychotherapist (Independent Practice)

Education &  Certification

Cassandra Petrella is a Registered Psychotherapist with the College of Registered Psychotherapists of Ontario. She is also registered as Canadian Certified Counsellor with the Canadian Counselling and Psychotherapy Association. She holds a master’s degree in Counselling & Spirituality from a joint program at Saint Paul University & Ottawa University. She completed her degree with a both individual and couples counselling training. Her undergraduate degree was completed at Carleton University in the Bachelor of Arts, Honours Program, in Psychology.

Counselling Experience

Cassandra has many years of counselling experience in treatment, research and education. Special focuses of her work include women related issues, anxiety management and counselling for adolescent girls. She also focuses on on helping individuals improve interpersonal relationships through both individual and couple counselling approaches.

Prior to private practice, she had been a counsellor at the Saint Paul University Counselling Centre and Cornerstone Supportive Housing for Women. At the Saint Paul University Counselling centre, she provided treatment to a wide-range of individuals and couples struggling with anxiety, depression, trauma, and relationship difficulties. At Cornerstone Supportive Housing for Women, she was a resident clinician for trauma survivors and women diagnosed with borderline personality disorder, schizophrenia, panic disorder and bipolar disorder.

Cassandra is a frequent guest lecturer at universities and organizations. She is often invited to speak on the topics of teen girls mental health and women’s mental health.

Cassandra founded the not-for-profit organization the I Love Me Campaign, a self-love campaign providing mental health curriculum in Canadian High Schools to teen girls through a 6-Session Self-Love & Mental Health Education Program. Cassandra and her facilitator team volunteer their time to deliver the program in high schools. Cassandra is an advocate for teen mental health and the importance of bringing mental health curriculum to Canadian high schools.

Cassandra is the Clinical Director and Clinical Supervisor at Senta Counselling Services. She also provides external clinical supervisor to psychotherapists, practicum students and therapists in training. She also mentors novice therapists in the field as they start their own clinical practices by providing one-on-one-consultations.

She is a published author in both academic scientific journals and clinical book publications. Much of her publications focus on her research related to the role of touch in developing human connection.

Personal Approach to Counselling

I understand that life can be unpredictable and challenging at times, whether it’s day-to-day frustrations, ongoing issues or overwhelming circumstances. The first step is to understand that you have it within you to change. In therapy together, we will work towards overcoming the difficulties and obstacles you may be facing personally, at home, in the workplace or school, or with your significant other. You will be free to express and consult with me in an open and safe environment.

As a cognitive behavioural and attachment therapist, I take a hands on approach in my counselling to help clients develop coping skills which will allow them to personally reduce the symptoms they are experiencing. These coping skills are often life-long techniques which help reduce anxiety or depression and help improve interpersonal relationships and personal self-esteem. Therapy will be both emotionally explorative and solution focused in each and every session.

Bianca Maschi (she/her), Hons. BA, MA

Registered Psychotherapist (Qualifying)


Bianca Maschi holds a Bachelor of Arts, Honours program, in Psychology with a minor in Women’s Studies at the University of Ottawa, an Ontario College Advanced Diploma in Behavioural Sciences and is currently completing a Masters in Counselling Psychology at Yorkville University.

Counselling Experience

Bianca offers counselling to teens, adults, couples and families. Bianca has gathered counselling experience in counselling treatment with special interest in both youth and adults experiencing addiction, anxiety, depression, self-harm, anger management, trauma and issues related to self-esteem. In addition, Bianca holds specific experience working with individuals living with, affected by or at risk of acquiring HIV. Her special interests include working with teens, LGBQT, and couples counselling.

Personal Approach to Counselling

Bianca’s treatment approach places a strong emphasis on inclusivity, warmth, self-compassion and acceptance. She works from a person-centered biopsychosocial spiritual lens to foster both lasting healing and change. Bianca offers an integrative approach drawing from evidence-based practices with a focus on cognitive-behavioural therapy, acceptance-based commitment therapy, and solution-focused therapy. Bianca holds an appreciation for the courage that accompanies deep therapeutic growth and is grateful to be entrusted with the lived experiences of her clients.

Maryse Hebert Professional Photo SquareMaryse Hébert, BA, MA

Registered Psychotherapist (Qualifying)


Maryse holds a bilingual Bachelor of Arts degree in Psychology with a minor in Sociology from the University of Alberta and a Masters in Counselling Psychology at Yorkville University.

Counselling Experience

Maryse has gathered experience in counselling treatment and research, with a special interest in both youths and adults experiencing different concerns including anxiety, depression, self-esteem, self-harm and trauma as well as interpersonal concerns. In addition, Maryse also holds specific experience working with women who are or have been victims of intimate partner violence, including but not limited to physical, sexual and emotional abuse.

Personal Approach to Counselling

Maryse’s treatment approach places a strong emphasis on creating a supportive, caring, and compassionate therapeutic environment. Her counselling methods follow a client-centred, holistic approach tailored to the unique needs of each client. She draws from evidence-based models including cognitive-behavioural therapy, solution-focused therapy and narrative therapy, while also implementing aspects of mindfulness into these practices. Maryse strives to create a collaborative, trusting, and empathetic counselling environment in order to understand each client’s personal experience. She believes in empowering individuals to create the change they desire in their lives as they work collaboratively to explore possible solutions and acquire new adaptive coping strategies to face their difficulties.

Maryse provides services in English and French.

Maria Abbas, B.CogSci, MA Candidate

Therapist in Training


Maria Abbas is currently completing a Masters of Arts in Counselling and Spirituality at Saint-Paul University. Maria holds a Bachelor of Cognitive Science with a specialization in Psychology with Honours, from Carleton University in 2018.

Additionally, Maria is a published author within scientific journals. She had co-authored a Meta-Analysis on Cognitive Remediation Therapy in Major Depressive Disorder.

Counselling Experience

As a Certified Cognitive Coach, Maria has practiced Cognitive Stimulation Therapy within the Geriatrics unit, at the Royal Mental Health Centre for three years. This counselling experience had included a diversity of populations, such as anxiety, depression, schizophrenia and dementia. As well, Maria had become a member of the Cognitive Remediation and Neuroimaging lab at The Royal’s Institute of Mental Health Research. Maria’s role was as a graduate research therapist. She had developed psychoeducational discussion activities for participants with mental illness involved within the cognitive remediation intervention study. 

Currently, within Maria’s graduate degree she is a Therapist in Training at the Saint Paul University Counselling Centre.

Personal Approach to Counselling

For Maria, self-compassion, trust and understanding are fundamental values of her therapeutic beliefs. Maria strives to emphasize a non-judgemental, accepting and supportive approach for a comfortable, and nurturing environment. Maria believes these values to be essential towards a strong therapeutic alliance. Maria is specializing in Spirituality within her graduate program. With Spirituality in mind, she uses a holistic approach, with Cognitive Behavioural Therapy to help clients experience detachment from thoughts, emotional reactions and to encourage self belief and mindfulness. Maria also relates her conceptualization of clients with the psychodynamic approach. This is also known as the Freudian perspective that focuses on ones unconscious psychological processes, which may have been formed from childhood.