 She is half Jewish from her father, and was on the 1986 Cannes Film Festival jury.In 2010, she was with Isabelle Adjani, Paul Auster, Isabelle Huppert, Milan Kundera, Salman Rushdie, Mathilde Seigner, Jean-Pierre Thiollet and Henri Tisot among the petition's signatures for Roman Polanski when the film director was temporarily arrested by Swiss police at the request of U.S authorities.Thompson's son is the actor Christopher Thompson.