I have an update on this situation.
Scarlette and I have been on each other's AW blacklists pretty much continuously since she ripped me off, I didn't want her showing up in my searches, and my messages to her were being auto-deleted (which is why we had to use UKP PM's in our March 2014 discussion). I have also changed my phone number since then. But I have sometimes wondered if she had finally seen the error of her ways and was willing to settle this. But given her previous mental state, any attempt to contact her could have triggered a paranoid reaction, a claim that I was an "infatuated stalker who wouldn't leave her alone". I decided that it wasn't worth the risk.
So it was up to HER to contact ME. But if she
was willing to contact me, I hadn't made it easy for her to do so (though there are a number of ways she could have used). I figured that if she had tried to contact me through AW, she would have taken me off her AW blacklist so that I could reply, and this is something I could test (and finally write this off if I was still on it, some "closure" would be good). I hadn't tried since before she got onto the UKP blacklist in 2015.
Given that this is now topical again, on Monday evening I took her off my own blacklist and sent her a test message, "Am I still blacklisted?". It
wasn't auto-deleted! She had taken me off her AW blacklist.
...Oh shit. Already I was having second thoughts, but at least this meant that she was willing to talk. What about? I sent the following:
OK, I wasn't expecting that. I presume this means that you have tried to contact me?
If you have something to say, I will listen. But if you threaten me again, this conversation ends here. Please try to be more tactful in future!
The following day, two AW messages from her were waiting for me. The first was:
Excuse me!?
Not a good omen! The second one, sent 2 minutes later:
I haven't tried to contact you and I have nothing to say!
You were practically stalking me!
My response was this:
I was on your Aw blacklist, and now I'm not. It was reasonable to assume there was some reason for that.
This is my first attempt to contact you since March 2014. That would have to be the most laid-back stalking campaign in history!
...But that one didn't get through, it was auto-deleted, I was back on her blacklist. I have waited a couple of days for something more useful (or at least more coherent), but obviously nothing will be forthcoming now.
Given her ongoing inability to understand the consequences of her actions (in this case, presumably a now-forgotten attempt to contact me), and her ongoing inability to understand the real reason why all of this happened, plus the other evidence already mentioned... I am now quite certain that Scarlette is certifiably insane, with no realistic chance of recovery. Of course, I will never try to contact her again.
Still, at least my conscience is clear. I did pretty much everything I could to stop her falling into this hole, and now I have at least tried to offer her a way out of it. Not my fault that she chose to throw it back in my face.
So be it.
Scarlette's symptoms are at least a partial match for a condition called "psychotic depression". Her depression must be quite mild for her to continue functioning as an escort (my wife was pretty much helpless when she was "off her meds"), and her psychosis might not be severe enough for actual hallucinations, but she's shown a strangely warped view of reality and the sort of spiteful self-destructive sadomasochism characteristic of a depressive "crash-and-burn". She is on the UKP blacklist because she WANTS to be, and that is a pretty scary prospect.