[1] She had a lengthy association as a stage actress with the Tarragon Theatre with whom she appeared in multiple world premieres of works by Canadian playwrights; including Judith Thompson's I Am Yours (1987) for which she won a Dora Mavor Moore Award in 1988.
[2] In addition to her work as an actress, Hamilton taught on the faculties of the University of Calgary's Banff Centre for the Arts and George Brown College.
[2] While working as an actress in the United States in the 1960s, Hamilton began a romantic relationship with the actor Les Carlson.
She appeared in several world premieres at the Tarragon Theatre, including Judith Thompson's I Am Yours (1987), Joan MacLeod's Amigo's Blue Guitar (1990), Michel Tremblay's Impromptu on Nun's Island (2002) and David Gow's Bea's Niece (2005).
[2] Some of the other highlights of her work at that theatre include performances in Jack Cunningham's See No Evil, Hear No Evil (1972), Tremblay's Forever Yours, Marie-Lou (1972]), David Freeman's Battering Ram (1973), Joanna Glass's Artichoke (1976), Lillian Hellman's Toys in the Attic (1978), Margaret Hollingsworth's Mother County (1980), and Tremblay's Albertine in Five Times (1985) among other works.