Let's Scare Jessica to Death - 1971

Discharged in the mental ward, Jessica hopes to return how it was before her nervous breakdown. But when Jessica goes with also a friend and her spouse, she sees that a mysterious girl residing in there who may or may not be a vampire. The dread and paranoia re-surface as forces of jessica encircle her, is she's slipping back into madness or which makes her wonder: Are the fantasies actual?