The system really is shocking at the moment
This is the backstory.
Someone Lithuanian, but paying tax for a couple of years (with pre settled status) is being bullied at work. The inquiry has proven nothing and as such she's had a complete breakdown and taking time off on statutory sick pay while submitting an appeal.
At the same time the room she rents has damp and it's affecting her physical health.
I made the suggestion that she go on the sick properly, leave work and get a doctor's note and get on benefits -- unfortunately she's renting for cash, with no tenancy agreement and a landlord refusing to give any evidence so she can claim housing benefit. (he's clearly up to no good).
She has a history of depression, poor mental health and a diagnosed personality disorder, but this is in Lithuania, and getting the records transferred is another nightmare as they'd also need to be translated.
She's under 35, which means she can't get more than about £84 for shared accomodation, unless she can get accepted for disability first. If she leaves her damp home, she'd be considered voluntarily homeless.
Most private landlords don't accept DSS -- and when they do, rents in London are rarely below £500 a month.
Having done some maths, benefits will probably leave her with less than £50 a week to eat and pay bills -- if she even manages to get benefits!
It seems the only other option is to claim PIP first, but that takes months and will probably end up in an appeal before she gets anything.
She also can't go back to LIthuania, because of another financial mess that's waiting for her if she does (not realising she needed to declare "out of country" status, thus owing several years of their equivalent to National Insurance).
I wish I knew what to advise, but the current system makes Thatcher's Britain seem like a fucking utopia!