From an early age Dympna was interested in drawing and painting as she painted regularly, and with little or no formal training is still mainly self taught. Her career began as a primary school teacher and her interest in art later influenced her to attend the National College of Art in Dublin where she qualified as an art teacher. This led her to teach art in secondary schools and much of her early work during this time took the form of murals which were painted in some of the schools and colleges in which she worked and which can still be seen today. Whilst teaching and living in Dublin she began exhibiting work in one or two of the Dublin galleries. As her reputation grew she began to exhibit further afield and her work has been exhibited in the following venues:
Some years ago Dympna's career took a new direction when she undertook further training - this time in Goldsmiths College at London University where she qualified as an art psychotherapist. She has since designed and facilitated a course for psychotherapists enabling them to use art in their work with adults ad children. These courses are now being run in various centres in Ireland.
She has developed a style which favours the use of a palette knife in which colour is manipulated freely on the canvas, producing work in which a spontaneous expression of emerging forms is freely exploited. The focus of her work in recent years is an "expression of the spirit of Ireland, its magic, its unique character, its rolling hills - old black peatland and windswept seashores". Dympna's pieces are an "expression of the soul's response to the landscape".