Following her collegiate studies, Hossack worked on stage at venues including the Muskoka Festival in Ontario and the
Rainbow Stage in Winnipeg. Her television roles include
Another World from 1989 to 1992;
Cobra from 1993 to 1994;
Profit in 1996;
Hope Island in 1999; and
Stephen King's
Kingdom Hospital in 2004. She starred in the Canadian TV series,
Falcon Beach in 2006. Hossack has made guest appearances on television shows such as
Sliders,
Mysterious Ways, ''
Da Vinci's Inquest, The Outer Limits, Eureka, Stargate SG-1, Stargate: Atlantis, and Fringe. She played Mrs. Oliver on the TV series Reaper''. She also played Deanna Campbell, the mother of
Mary Winchester and the maternal grandmother of
Dean Winchester and
Sam Winchester on the CW paranormal/horror series
Supernatural. == Personal life ==