She was a Labor member of the Western Australian Legislative Assembly from 2001 to 2008, representing the district of Wanneroo.
[1] Born in Melbourne, Guise was formerly the President of the WA Council of State School Organisations.
Guise was re-elected at the 2005 election, defeating Liberal candidate Paul Miles.
[3] From 2001 to 2008, Guise served Deputy Speaker of the Legislative Assembly and the Chairman of Committees.
Seeking a third term at the 2008 election, Guise was defeated by her 2005 opponent, Paul Miles of the Liberal Party.