She continued to work through the 2000s including two seasons on stage in Prince Edward Island in the role of Marilla in the musical Anne & Gilbert at the Victoria Playhouse in Victoria-by-the-Sea and the Jubilee Theatre in Summerside respectively.
Prior to entering politics, Dumville was a member of the Royal Canadian Mounted Police, serving in Newfoundland, New Brunswick and Ontario, and then a businessman, who owned and operated two Burger King franchises in Summerside.
There was a school named in his honour at the The Royal Canadian Air Force base and training school in Summerside, Prince Edward Island.
In 1974, he chose to go to CFB Summerside CFB Summerside, flying the De Havilland Canada DHC-5 Buffalo for Search and Rescue and MedEvac duties, continuing until his early request for release from the military in response to policies within the RCAF on unification and other issues.