god mate i really dont know what to say, you seem to have tried all the things i would suggest. The only other thing i can think of sitting with her in the darkened room, holding her hand, stroking her hair and comforting her. Try and talk to her, say things like 'i dont want you to die, i love you and want you with me' etc and try and find out the main problems she is having. I think just sitting with her mite help at this point.

Sorry i dont have any real solutions or help, but i feel for you and hope it all turns out ok xxxx