Fortier made her debut in the NBC teen comedy series Running the Halls[2] in 1993, playing Holiday Friedman, one of the lead roles.
[3][4] Fortier appeared in the film To Gillian on Her 37th Birthday in 1996, playing the role of Cindy, the flirtatious best friend of Claire Danes' character.
[6] The same year, Fortier also appeared in the thriller film The In Crowd playing the role of Kelly who has a crush on the lead character, Brittany, played by Susan Ward;[7] Fortier's portrayal elicited mildly positive notice from The New York Times reviewer Elvis Mitchell.
[8] In 2013, Fortier joined the cast of the Netflix supernatural drama Hemlock Grove, playing the role of Marie Godfrey, one of the series' mortal characters.
[1][6] She briefly studied at Saint Mary's College in Moraga, California, before moving to Los Angeles to pursue her acting career.