Both my girlfriend and I are 19. We've been together for almost two years now. She's also diagnosed with depression and anxiety. She also told me she has mild autism but I'm not sure if it was a self diagnosis or by a psychiatrist.

 My girlfriend can see and hear ghost/demons and she believes that she is an reincarnation of the angel Raphael. She also believes that she has abilities such as flying, controlling demons and many others.

She doesn't believe that she has schizophrenia and would get really mad or break down when people tell her she has schizophrenia or that she is hallucinating.

I always try to listen to her talk about the demons trying to harm her or whatever stories she tells me and I would show her that I believe her so she wouldn't get mad.

It's not easy to deal all her mental illnesses as I have my own fair share of problems too which only seems to be getting worse over the years. I would always try to prioritize her and give in to her until I totally burn out and shut everyone but her off for few days and just spend my entire day on bed resting.

Does she have schizophrenia? Or are these another type of mental illness. How can I cope and help my girlfriend?