|Caligula: The Untold Story (Caligola: La storia mai raccontata; Emperor Caligula: The Garden of Taboo) (1981) [Livia]: Reportedly commits suicide by stabbing herself after grabbing a knife while being raped by David Brandon. (Nudity alert: Full frontal & rear) (Thanks to Johan)
A Blade in the Dark (La Casa con la scala nel buio) (1983) [Angela]: Throat slit by Michele Soavi in the bathroom, after first being stabbed through the hand and partially suffocated with a plastic bag.
Demons (Demoni) (1985) [Carmen]: Throat slashed by the demon/zombie Geretta Geretta in the theatre restroom; she dies shortly after stumbling behind the movie screen, and transforms into a demon/zombie herself while the rest of the theatre patrons look on in horror. (Thanks to Johan)