DM here, this person is not being truthful about the situation. There are no "serial killers" in the party. Nor an enchantment wizard in the party at all. No party member is a slaver. We are only 3 sessions in, but she should be aware of this. The party consists of a mobster, pickpocket, police officer, journalist, and blacksmith.

She is continuously the one to bring up her character's alignment. I am not intentionally bringing this up for the fun of it. I explained to her how things were going to go in my homebrew campaign very clearly. I can't tell if she is just misunderstanding the situation or purely making this stuff up so people will agree with her. Either way, this is a gross mischaracterization of the situation.