In 2001, she was cast as Liberty Van Zandt on the hit Canadian television series Degrassi: The Next Generation. She remained on the show from 2001-2009 for nine seasons. Being at Degrassi gave Barrable-Tishauer much fame, as the program has been popular among Canadian teenagers since 1979, and when Barrable-Tishauer joined, it was enjoying one of its most popular eras. Barrable-Tishauer graduated from Concordia University in Montréal in 2012 with a Bachelor of Arts (B.A.) in Communication Studies and Computation Arts. As of 2014, she is working as Digital Marketing Coordinator for Urban Adventures.
- Sarah is a Cancer.
- She originally tried out for the part of Manny Santos, and ironically Cassie Steele, who plays Manny originally tried out for the role of Liberty.
- She dated Ryan Cooley, whom her character dated on the show, as well as Mazin Elsadig, with whom her character had a fling, from mid 2009 to late 2010.
- She ships Sellie.
- In her 2012 graduating class at Concordia University, she was the valedictorian of the Faculty of Arts & Science.