I am sorry you are going trough this now.
But, please, try to see things from the other corner. I`ll try to be short.

1. your doughter is still weak and unstable (and she knows it)
2. she needs you to be stable because she is unsecure
3. she refuses to admit that you are ill - because it means that she should take more rensposibilities. Huh - you can`t expect that somebody who was on heroin for 7 years can handle real rensponsibility.
5. she is so negative toword your condition cause she is afraid, she is very afraid...

Probably she feel lost when you have crisis. She is trying to control situation but on the wrong way, obviously.

Maybe you should ask her to help you on very certain way - t telling her what she is expected to do - clean, cook...whatever. Or ask if you two can do things together - it could help you as well and make her feel capable and useful.

I am sure she loves you very much but she is very afraid of being alone and without support. She needs you more than you can imagine. That`s why she reacts on such way.

Wish you get better soon