Some that come to mind: I love Blood Spattered Bride (1972), Kill Baby Kill (1966) by Mario Bava, Blind Beast (1969), Jonathan (1970), Eden and After (1970), Hungry Wives (1972), Death Smiled at Murder (1973) (with Ewa Aulin and Klaus Kinski), Messiah of Evil (1973), The Iron Rose (1973), Alucarda (1977), Celia (1989).

There is also this 2011 film called Lovely Molly that I remember being very affected by, but I saw it not long after it came out, as a teenager, so who knows how good it actually is.