Michelle is the fourth of six children from a Chilean-Canadian family. She was born in Calgary where her family first settled upon arriving in Canada, and grew up moving between Vancouver and Toronto. She began her acting career by joining the high school Improvisation team, and went on to study Theatre and Classical Literature at the University of Toronto. Her first professional acting job was playing a showgirl in a British farce.Michelle began her career on the stage, performing Shakespeare, Ibsen, and Chekhov on stages in Toronto. Her first appearance on the big screen was the lead role of Debra in George A. Romero's Diary of the Dead. The film made its debut at the Toronto International Film Festival and the Sundance Film Festival before being released in spring 2008. Notable television appearances include the recurring character F.R.A.N on Stargate Atlantis seasons 4 and 5 and guest starring roles on The L Word and The Smart Woman's Survival Guide.