Hi, sorry you are having such a tough time. Your DD is behaving very badly, but I would bet it's her way of expressing her anxieties about your health and potential redundancy. IMO, teenagers are often frightened when they see vulnerability and react in a way that somehow denies the reality. E.g. - You're ill? Well, if I don't help you, you'll be forced to do everything and that will prove you are really not ill at all. You may lose your job? Well buy me a £400 phone and we can pretend we have loads of money anyway. It's a form of denial.
If you can manage it, pick a quiet time, perhaps away from the home if possible, to have a frank discussion about what's happening here. Listen to her fears first - she will definitely have some. Then try and reassure her that you are only asking for limited extra help from her (perhaps have a short list of suggested chores she could help with, so she can see there is not some sort of bottomless pit of responsibility facing her). Better still, ask if she can suggest ways of helping around the house. You need to be tough with her but understanding too.
On the money front, she needs to be told, matter-of-factly, that you simply can't keep on paying for pretty much everything. Prepare a budget that you think can work and invite her, politely but firmly, to discuss it with you. The fact she "screamed that she wouldn't pay any of MY bills and I am the mother and they are MY responsibility" I think is her way of saying how scared she is about everything.
Suggest to her that this is a tough time for you both, but you can get through it more easily if you can agree to be a team, at least on some things. Good luck.