Fanchette was one of two wildcard entries into At the 2012 Summer Olympics she finished 35th overall in the heats in the Women's 200 metre freestyle and failed to reach the semifinals although she did swim her personal best of 2:23.49, some 27 seconds behind the winner of the heats Federica Pellegrini. At just 14, Fanchette was one of the youngest competitors at the Games.