Thank you for your replies. I haven't tried alanon because she and her mother are stalwarts of it here in my city. She identifies as an alcoholic but I know the reason she won't go to AA is that they will call her out for smoking grass every day - and hiding it in her body when she travels abroad.
She is good at telling the story that alanon members want to hear and not so good at honesty to herself and others.
I have free legal advice but right now it looks like I have to hunker down, be kind to myself and enjoy the hugely symbolic bed I got second hand. It's the first thing for my new life.