So, long story short: In some recent conversations, a couple of things became really clear. The first is that Alix said, in her own words, that she's doing a lot better at not fighting, not harassing, and so on, everywhere except here. This place is somehow triggering for her, and she doesn't want to be here, but she can't give up because if she gives up "you" win. (I never figured out who "you" is.) The second is that her reality-editing has gotten to be a lot worse, and I'm no longer finding it possible to successfully communicate specific claims or criticisms to her and confirm that she's reacting to the things actually said, as opposed to other things. She stated that she's going to be like this until at least September, when she is expected to somehow end up on the mainland at a college that isn't near her shitty parents, and that there's nothing she can do to stop being abusive while she's in that environment. So I have temp-banned her, except "temp" in this case does not have a specific expiration time, it's just "until I have some reason to think that things might have actually improved". I'm not particularly happy with this, but I've gotten really burned out on the recurring theme of Alix working herself up into a tizzy and justifying how mad she is and making excuses for atrocious behavior. It's not working, and at this point, either she's completely lying about how much better things go elsewhere, or she really is doing a lot better except when she's around here. Either way, this seems like a good experiment to try.