Gabby began her career as a student nurse in Belfast City Hospital in 1978.  Following completion of her training she specialised in Care of the Elderly.  In 1983 following the successful completion of a District Nursing Specialist Practice Course Gabby took up post as District Nursing sister in the North and West Belfast Legacy Trust.  During her time as a District Sister, she undertook a BA Honours degree in Business Studies at Ulster University.

In 2006 Gabby was successful in her application for post as Assistant Director of Community Nursing in the North and West Belfast Legacy Trust.  In 2007 following RPA and the merger of Trusts, Gabby became Service Manager for Older People Medicine & Surgery Directorate and Associate Director of Nursing for Older Peoples Service.  In 2017 Gabby took up position as Community Divisional Nurse in Adult Community and Older Peoples Service Division.  Gabby retired from this post in 2019 and joined the board of Brain Injury Matters in November 2019.