Trish moved to Perth with her family in 1978. She became active with the anti-nuclear movement while teaching in Kalgoorlie in 1980, and was an active campaigner for People for Nuclear Disarmament and the election of Jo Vallentine to the Senate in 1984.
Trish was a Foundation member of the Greens (WA), joining in January 1990, and has worked for three Greens’ Senators, Jo Vallentine, Scott Ludlam and Jordon Steele-John, as well as for Giz Watson MLC in the WA Legislative Council.
Trish was awarded Life Membership in October 2017 and remains active in the Greens (WA). When interviewed in 2020 she was the Convenor of the Greens’ Candidate Assessment Group and a member of the Administrative Working Group.