There's definitely some 4d chess going on. We know that there are competing factions in the Fraternity, that Valerie has another secret that our asshole sister won't tell us even though we all know it'll turn out to be relevant, that she was fine with the MC being rescued from the hospital, her whole "I did what I did because I'm a very evil person" shtick is very obviously a mask. She does have a few screws loose in the morality lobe, but I doubt she'll turn out to be the principal antagonist.really doubt it. that'd be 1000 degrees turn up.