I think the majority of the reviewers never watched the whole movie. This film is about post partum psychosis. With the Mom battling with her position in life and her family. Done very well. The relationship between Marlo and Tully is sometimes questionable (waitress uniform fantasy scene) but believable. I didn't truly get it until the doctor states "she is suffering from sleep deprivation" after what seemed like a few weeks with the night nanny.