From leading roles to supporting cast, Isabelle has performed in over fifty live productions over the last eighteen years. Her latest theatrical credits include Dinner at Eight and My Body My Health My Choice!.

Isabelle is a member of We Are Actors, a community based initiative based on promoting New York stage actors by giving them a stage to perform on outside of productions and classes. Isabelle produces and co-directs A Night Of Scenes, presented at The Tank.