My friend (we'll call her A) from university is in an episode currently and is self-harming and informing another friend (call him B) about it after the fact. The issue is I and B are both out of state from university. B and I are also mentally ill and we're having a hard time understanding what to do. Realistically she needs to go to a hospital and be hospitalized at this point (she's admitted as much before) but every time one of us mentions it, she laughs it off and says she's going to self-harm more. 

I'm trying to express to her that both of us are also mentally ill and don't have the capacity to be able to help her through it right now and that she needs to go to a hospital but I don't know how to do it without hurting her, or her ignoring it. She claims that therapy doesn't "work" on her and doesn't want to seek more help.

The issue isn't just that she's hurting herself (that is the main issue though, we're both really concerned) but also that she's telling us and we can only get more and more anxious about it without doing anything. I don't want to tell her it's "selfish" or anything, because I understand how shitty that feels to be told when you're mentally ill. I just really want to help her but also maintain my own boundaries, because i'm trying really hard to heal from my own issues. any help would be appreciated:)