Hi all, I just thought I would give a Christmas update to this story.
Firstly, there was something of a breakthrough where it finally seemed to dawn on her that the only way to win freedom and trust was to stop trying to kill/hurt herself, and (as we had been saying for years) actually try and explain how she felt, and allied with upping her meds a lot.
From that point on, she was given a bit more freedom to leave the unit for longer at a time, leading to unsupervised release where she was able to go out for the day, e.g. Back to mums for a few hours, and just take her lunchtime meds with her (morning and evening meds taken in the unit.
The plan was made to try and transition her to supported living, at a specialist Aspergers facility (block of individual small flats with on site staff) about fifteen miles from mums house, thirty from me. She went through waves of liking and not liking this idea, us trying to point out what a bloody huge opportunity it was, but finally accepted it as the only realistic option (going back to mine or mums being a likely repeat of the past behaviours) went to see it and was suddenly massively keen, and agreed to it.
She was discharged from the MH unit two weeks ago, to spend the brief run up to Christmas at mums and have the opportunity to get stuff together for her move into the flat. As you would expect a stressful time with a potentially huge setback where she grabbed three days meds in one go off mum and downed them, ending up with a blue light job to A&E and two nights in hospital under observation, and another incident where she scratched up her arm with keys (knives and meds are kept in an electronic safe in mums kitchen)
Ho hum, we thought it was all going to fall apart at that point
However, light at the end of the tunnel. We have bought her some nice furniture and accessories, and on Thursday she moved into her new flat. The staff do her meds morning and evening and knives are given and used under supervision. And *so far* she is really positive, as she has the freedom to come and go and do what she likes, and her own space, but the risky stuff is being managed for her.
Thanks to everyone for the kind support offered and given here and offline.
Time to start getting myself back on track after the stress of the last couple of years now.