How is that handled inside the ethical framework that governs euthanasia? It must be a consideration.
The remaining thing to try would be hallucinogens. LSD, psylocibin or perhaps ibogaine. These are different and unpredictable enough to maybe work. And this is a case where, since it is otherwise bad enough, even electroshock therapy could be of value. Since these are way past typical options and probably now banned, they would require special handling.
(Assuming VR therapy and standard CBT have been exhausted. And TMS showed no improvement.)
I would never give hallucinogens to a depressed person, that could be enough hell to break someone’s mind permanently.
If the other option is killing them, hallucinogens start to look a lot more reasonable
First, she claimed to be on 11 antidepressants, I doubt it but I bet she was on a few. ecstasy and many anti-depressants are serotogenic and you'll give her serotonin syndrome. You really don't want to screw with that, there's reports of ecstasy users ended up with permanent depression issues. To lower such risks, you'd want to ween somebody suicidal off anti-d's first to take a drug that's pretty similar to anti-d's in the first place. There's some recent research that shows if you've already done the one you won't benefit as much from the other usually [1] but if you were going to do this I'd taper off some of the anti-d's first.
The idea of taking heroin for mental health so you can go to rehab I think speaks to buying into Hollywood narratives. Hitting rock bottom doesn't help you recover from mental health issues usually, it only makes your mental health worse, look around people who don't have a home and you won't see paragon's of mental health.
[1] https://www.psypost.org/2021/03/previous-antidepressant-use-...