The most important thing for you to do is to get her on the meds again. If you can't, then see if someone else can. If the situation is bad enough to warrant the hospital, then go ahead (but I don't know the financial situation to say if that is a good idea or not).

I can tell you my extremely subjective advice, if you think it'll help. So, I have a very bad habit of going off my meds. Every time I'm off them, I don't want to take them again. So, for me, it's always been helpful to have someone I trust and love to tell me what I'm doing is harmful to both myself and to those who care about me. That mostly works because I never want to hurt them, and I know deep down that the meds help. But sometimes I'm too far gone for that to be effective. In that case, seeing them be sad and hurt always makes me kick my self-loathing to the curb enough to get on the meds again. But I know people for whom even that doesn't work.

It is really hard to care for someone who doesn't care about themselves (or tries really hard to convince themselves they don't). It takes a lot of patience and emotional resilience and time and effort and no person should have to do that alone. I don't know what your relationship is, but it might be a good idea to have other people (she trusts/loves) around to help.