TRIENA HORNE (NEE MCGUIRK) BSW, MSW, RSW
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Credentials and Professional Affiliations:

Triena graduated in 1999 from Ryerson University with a Bachelor of Social Work (BSW) and a minor in Public Administration. She began her career working with Children’s Aid Societies (2000-2012), Toronto Police Victim Services (1998-2000), and various community-based services supporting individuals with dual diagnoses (1997-2001).
In 2004, Triena earned her Master of Social Work (MSW) from York University, where she received the Gerry Erickson Book Prize for Best Research for her study on “The Role of the Protection Worker in Recidivism in Child Welfare.” From 2006 to 2023, she was appointed to the Clinical Panel of the Office of the Children’s Lawyer (OCL), where she conducted Section 112 Assessments, Voice of the Child reports, and provided clinical support to OCL counsel.
Simultaneously, Triena began a career in education, serving as an Attendance Counsellor for the Separate Board (2006-2007) and as a School Social Worker for the Public Board (2007-2023).
In 2015, Triena trained as a Family Neutral/Professional within Collaborative Law and began serving as a Child Consultant and Mental Health Professional in family law, assisting families navigating separation and divorce through collaborative, litigation, and mediation/arbitration processes. She has provided expert testimony in criminal and family law proceedings and has spoken at conferences and workshops, including those with the Family Dispute Resolution Institute of Ontario (FDRIO), Ontario Association of Family Mediators (OAFM), and the Law Society of Ontario.
In 2023, Triena transitioned from education and the legal field to focus entirely on counseling, offering her extensive experience in child welfare, family law, and education to serve children, youth, and families. In addition, she became trained in Exposure Response Prevention (ERP) therapy for Obsessive-Compulsive Disorder (OCD) in 2023, and in Emotional Freedom Technique (EFT or "tapping") in 2025.
Triena is deeply committed to staying up-to-date with the latest evidence-informed approaches to practice, ensuring the most effective care for those she serves. Outside of her professional work, she cherishes spending time with her family, including her grandchildren, who bring immense joy and balance to her life.
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Triena is a member of the Ontario Association of Social Workers and the Ontario College of Social Workers and Social Service Workers.

Family Fundamental
triena mcguirk, bsw, msw, rsw

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   Contact Information:
     t. 416-436-3297
     e. [email protected]
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416-436-3297
  • HOME
  • ABOUT
  • Counselling Services
  • ERP for OCD
  • Training & Workshops
  • Policies & Procedures