Complex sentence: Lindhome was one of four actors from the play to then be cast in the Academy Award-winning film "Million Dollar Baby", where she played Mardell Fitzgerald, the sister of main character Maggie Fitzgerald (Hilary Swank).
Split into simpler sentences: Lindhome was one of four actors from the play to be cast in the Academy Award-winning film "Million Dollar Baby". In the film she plays Mardell Fitzgerald, the sister of main character Maggie Fitzgerald (Hilary Swank).