I agree, mental health issues are all different and people have different capabilities. I hope my posts are not being read as "pull yourself together and work a 45 hour week like everyone else." That's not my message.
I have a huge amount of respect for the OP, who sounds like she has many people relying on her.
I think she would be happier if she.... were happier. So would her children. Work is a part of this. Benefits that take into account her situation would be a part of this. Addressing the fact that she is living with an abusive man is a part of this. Her health is a part of this. Someone needs to start this ball rolling .... it's not all about "who will support you?" to me, but more "are you leading the life you could be leading?"
This is why I keep banging on about WA because it is incredibly powerful to sit in the same room as someone who is really hearing you, and who has practical knowledge and experience.
Open ended conversations with clued up and empathetic people are really helpful. I've done it before when looking for work - you don't go in saying "can you give me a job?" because you're inviting the answer "no". you say something more like "hey, what's going on in your line of work?" and things.... pop up. Not necessarily full time jobs with your name on it, instantly, but when you are in a meeting with the right person who is good at this, things... unfold.
So you don't go into the WA meeting and say "can you get me a full time wage?" or "can you get me a flat?" or "can you cure my anxiety?" - or even if you do, you will get richer and more nuanced answers than just "no" I hope. We know that no one agency or person can answer "yes" to those questions.
So the conversation you have starts with "here is my situation" and the WA person talks to you and things..... unfold.
We still have the NHS in this country - just about.
We still have a benefits system - just about.
there are ways of accessing free counselling.
There are ways of accessing a certain amount of free legal advice.
there are people who can advise you on housing.
I'm not getting anywhere because you don't want to act and I'm too far away and too theoretical to have an impact, and not knowledgeable enough (or empathetic enough?) but if you get in front of someone in real life they could really inspire you and help you to change things.
But you have to kick it off. they aren't going to get on a bus, go across town and come and knock on your door.