Domestic/Intimate 1990's Psychotronia

Post-Giallo, Post-Slasher, what ruled in the 1990's was the intimate/domestic thriller, which would later be codified into Lifetime Original Movie Programming. What I am specifically thinking of is a narrative like "I can't believe that my sibling/distant relative/best friend/child/old classmate/parental figure/significant other/nanny/babysitter/student/roommate/client etc is totally insane and whose torrid interior drama has spilled over into my life in this fashion! Help!" Or 'What mysterious doings is person x who I thought I knew so well up to?" There can also be the 'is this person a killer or not?' movies, if the emphasis is on the relationship between the leads. I am not looking for supernatural movies per se, but am not opposed to them, if lightly supernatural as in…