OP, I remember your last thread - I wanted to post at the time but didn't get the chance.
I just wanted to show some solidarity. I have never posted about it on here before, but my daughter and I have experience of dealing with family members whose autism can cause challenges - my elderly cousin in particular. Her recent behaviour towards us, around my dad's death and her inability to cope with or even acknowledge our grief, has led to the rest of the family, bascially everyone apart from DD and I, no longer wanting to have much to do with her.
I won't detail it all, but not only did she provide no support or even offer verbal condolences, she in fact got quite shitty with me when, for example, I was unable to go and meet her to take her the new phone I had purchased for her, the day after my father died in my presence after a long and gruelling illness.
Of course, I understand that it is her autism that causes her to respond in ways that are often baffling, and can seem very heartless. And fullyI believe that she does truly love us, despite the fact that this is often not detectable by any of the human senses!
However, that does not always make it easy to accept her actions and ignore the hurt they cause us....
Anyway, sorry, that's all about me - it's just that a lot of the conflicting emotions you described around your daughter's behaviour felt really familiar when I read about them
There's a balance to be struck, isn't there, between support and tolerance towards the loved one in question, and necessary self care and acknowledging your own, totally justifiable, feelings of frustration and hurt.
I know that I don't always get it right, far from it.
He kind to yourself, remember there is no rule book. All you can do is your best.
What helps me, when it's difficult, is to try to find more love. Both for the person in question, and for myself.
Sorry if this doesn't make much sense - it's hard to talk about this stuff sometimes. It's so personal. But actually, talking and sharing and hearing others' experience can, I think, only be a good thing.