Sibling Rivalry

Sibling Rivalry is a movie starring Kirstie Alley, Bill Pullman, and Carrie Fisher. A frustrated woman's life gets even more frustrating once she gets into an affair with a man who suffers a fatal heart attack after their fling.
Marjorie Turner is suffocating. Her younger sister Jeanine has no ambition, and her 8 year marriage to Harry puts her in constant competition with his family (all doctors)..