Just here

Makes me hope that the twist is that she knows Baal is trying to play her and she goes along with it because she has plans of her own.

Let me turn you into the demon king and with that I can ensure we spend every hour together, since I'm the princess and this could lead to our marriage and you going away to stay with me forever.

That bouquet of flowers was very Yandere.

there's gotta be a King or Queen somewhere to rein her in. Don't tell me her attendants and servants don't see what's happening?!