"It's not like it's - actively controlling her. It changed her, but it sounds like a one-time deal, and not on something trivial like whether she likes apricots. What would happen? Would she be able to understand the thoughts she generated during the period she was affected or would they be so much gibberish? Would there be more side effects - emotional or cognitive or magical or mnemic or personality-affecting or who knows what - if you just rip out the new thing like it's so much wood and plaster? Putting her back exactly the way she was would mean editing out a few hours of memories completely, obviously, so we have to something else - the memory loss solution is pretty drastic for the same reasons the necklace is scary. And I don't think you're planning to torture her enough to make it appealing by comparison, although I suppose you could be doing it by mistake. I mean, I'm trying to design a fix that doesn't have these problems, so is Phix, so is Ice, but we don't know if we're going to be able to do it at all, let alone whether we'll be able to handle it neatly."