Gaucher was on the team representing Canada at the 2009 FIBA Americas Championship for Women. She averaged 6.8 points and 4.4 rebounds per game, helping Canada to a bronze medal and a berth at the 2010 world championships. She continued with the team at the 2010 FIBA World Championship for Women held from September 23 to October 3, 2010 in the Czech Republic. She averaged 13.1 points and 4.8 rebounds per game, leading the team in scoring. The team finished 12th.