Studied singing at the Royal Conservatory of Music in Toronto.
Her British father was also an actor and singer.
Mary was privileged to meet and audition for the late, great Robert Wise (director of The Day the Earth Stood Still (1951) and The Sound of Music (1965)). She didn't get the part, but she did make him laugh.
Recipient of the 2016 Sam Payne Lifetime Achievement Award.