Coghill and Myra Benson founded Canada's first professional touring children's theatre, Holiday Theatre in 1953. From 1967 to 1969, Coghill was the artistic director of the
Vancouver Playhouse. She was the first woman to hold that position. In 1994, Coghill founded Western Gold, a theatre company for senior professional actors in Vancouver. She also served as a director for the
National Theatre School's English drama section in 1960. She held honorary degrees from
Simon Fraser University and the University of British Columbia. Her best-known work is
Song of This Place, a play about the Canadian artist
Emily Carr. In addition to her writing, Coghill has made guest appearances on ''
Da Vinci's Inquest as Portia Da Vinci and as the dying human host Saroosh/Selmak on the Stargate SG-1'' episode "The Tok'ra, Part 1 & 2". Coghill received four
Jessie Richardson Theatre Awards for her theatrical accomplishments in Vancouver, British Columbia: Vancouver Professional Theatre Alliance Award (1988–1989), Community Recognition Award (1989–1990), Outstanding Performance by an Actress in a Leading Role (1990–1991), and Unique Mandate and Contribution to the Theatre Community (1998–1999). Other awards include a Governor General's Performing Arts Award for Lifetime Artistic Achievement, the Gemini Humanitarian Award,'' ==Personal life==