Dancing in the Dark (1995)

Original title: Dancing In The Dark

Where Fantasy Ends and Nightmares Begin.

Anna Forbes suffers an attack and sexual abuse by her father-in-law. But when she overcomes her fear and tells her husband Mark what happened he does not believe her, choosing instead to believe his father who denies everything. As Anna becomes increasingly desperate to be believed and her actions become more erratic, Mark has her committed to a mental institution for psychiatric treatment.