After graduating from Yale University, Foster returned to acting, starring in The Accused, a role for which she won an Oscar.
She then attended Yale University in where she majored in , wrote her thesis on under the guidance of , and graduated in 1985.
In 2011, Foster also appeared as part of an with , and in 's comedy , in which the attempts of middle-class parents to settle an incident between their sons descends into chaos.
She starred together with in the dystopian film 2018.
In 2015, Marsh married personal trainer James Placido.
Foster had founded her own production company, Egg Pictures, a subsidiary of in 1992, and released its first production, , in December 1994.