In 1999 Farley played Stella and Nancy Brooke in The Intruder.

When Meghan Ory wanted to leave Vampire High in 2002 the producers needed to introduce another main character, Dillan Vanderson. Farley auditioned for the part and was cast after three auditions. Since the producers were searching for a girl who looked quirky Farley dyed her then blonde hair red. This look was inspired by the character Lola (Franka Potente) from the German film Run Lola Run. However, the series was canceled and so Farley remained only six episodes in the series.

In 2014 Farley could be seen as Anna in Uvanga, directed by Hélène Cousineau and Madeline Ivalu. From 2014 to 2015 Farley played Judith Laramée in the series Mémoires vives from Radio-Canada. In 2015 she could be seen as Julia in four episodes of the series Heroes Reborn. She plays Julia, the wife of Noah Bennet (Jack Coleman), one of the main figures of the series. From 2015 to 2016 she starred as Nicole Breen in the TV series This Life. Farley later said that she loved playing Nicole since she was a bit of everything. She was very emotional and tried to be in control in which she did not succeed much. Farley enjoyed the complexity of her character.

Farley has also worked as a Producer, Director and Screenwriter. In 2015 Farley directed the short film Saccage. In 2017 she wrote and directed the short film Marguerite.