Muir was named AUS Rookie of the Year during her time playing with the Saint Mary’s Huskies women’s soccer team. Her standout skills also earned her two AUS MVP awards, five-time AUS All-Star status and two-time All-Canadian honours. Twice named Athlete of the Year at Saint Mary’s University, Muir went on to play with Canada’s national women’s team from 1992 to 1999. She played with the national team at the 1995 and 1999 World Cups.