I'm not looking for anybody to provide me with a magic answer as I'm quite confident there isn't one, but just needed to vent/talk about it...
It's a massively long story but DH had MH problems from when he was a child, his Father died when he was 16 which obviously had a massive effect on him, but in addition to that his Mum went off with another bloke within about 3 months and abandoned him in their family home. His older half sister then came to live there to supposedly look after him, but turned out to be a very bad influence. She also spent his inheritance (fraudulently - forged signatures etc), when this came out, his Mum refused to take action against her so it was left.
DH (still in his teens) got in with a very bad crowd, got into all sorts of drugs and ended up being hospitalised for his MH problems - PTSD etc. He then moved away and tried to get on with his life but struggled. We grew up on the same street and were very close, but when he went away there was no contact. He came back to his hometown 8 years later, we met again and got married etc. The relationship with his mum had always been strained because he couldn't get over her just leaving him like that. Before he moved away, he had walked the 20 odd miles to where his mum then lived but her new partner opened the door and turned him away - his feet were bleeding and everything! Apparently his Mum didn't want anything to do with him because he was into drugs.
So, fast forward to now (been married 8 years now), he was friendly with her when we got married and she came to the wedding (along with that awful sister!). We tried to get along with her - when DD2 was born we went to see her a few times. She had a new partner by then and they even came to visit us once. DH and I had some problems about 2 years ago due to his cannabis addiction and I threw him out. He asked her for help but she wouldn't help him, I had a rather challenging phonecall with her, I wasn't horrible or disrespectful but I was truthful and she didn't like it!
After that, there was no contact as DH didn't want to know her. He said my Mum was his Mum now as she had shown more love to him in a few years than she ever did. She got ill and was told a few months ago that she may not have long to live due to a heart problem. I tried to get DH to agree to visit her but he kept putting it off.
So we got a phonecall the night before last to say she had died suddenly while with his other sister who we get on with. He has been up and down ever since. Part of him is relieved she is finally gone and feels numb, the other part of him is devastated as she was his Mum after all, even if he didn't think she was a good one.
He suffers from anxiety, agoraphobia, depression, OCD and many more problems but wants to go to the funeral. I suspect he will want to challenge the half sister about the inheritance from his father, not sure what's going to happen there.
Not sure why I've gone into so much detail, I just feel that I'm useless to him as I have no idea what he must be going through. We're very close to my parents and I'm an only child and I can't imagine how I would feel if that happened to me, let alone if there was bad feeling (which there isn't).
I've babbled now, sorry!
Again, I know it's impossible to give any answers, I've just told him there is no right or wrong as far as how he should feel and that I'm here for him. I generally keep the contact with other members of the family as he doesn't do phone conversations, so I've been talking to them and they're all worried about him too!