Graduated from Queen's University in Kingston, Ontario with a BA in Drama in 1977. Switched from English.
Daughter Maggie was born in 1989 and son John (Jack) Branton Murphy in 1992.
Wendy and actor husband Michael Murphy have two children, Jack Murphy (b.1992) and Maggie Murphy (b. 1989), both of whom co-starred in the movie Sleeping Dogs Lie (1998) with their parents.
Good friends with actor Harrison Ford.
After attending Queen's University in Kingston, Ontario, where she won the Lorne Greene Award for outstanding work in the theater, she studied at The Webber Douglas Academy in London.
In December 2014, she revealed to the press that she had come out to her family as a lesbian several years ago.