Loved the film even more with the twist.

I was actually thinking during the movie that I hope the killer doesn't end up another stranger/killer who was linked to the family a LONG time ago,,,,ala Jason and Micheal Myers. When the reveal happened I was actually happy and immediately thought, "this crazy bitch is the one actually telling the story" therefore She could've stalked and followed Alex the whole time. She could've not even met her parents or even Alex for that matter. It made me question what was real and what was reality of which I liked. My only question was where was she taking Alex????? Did she have a place where she took all of these girls she fell in love with.?