I want to help a friend of mine.

I want to help a friend of mine. She is very much tormented by some bifurcation. She's a nice, sweet girl. But during the day her behavior changes a lot. The thing is that she suddenly "goes" into another reality. When she's completely "there", she forgets who we are, reacquaints herself with the people around her. In the other reality she is a different person, she has several personalities living in her. She learns about her personalities from us when we tell her what she is doing. None of her personalities remember any of the others. It is also interesting that her personalities are of different genders. She looks like a girl, but lately the "guy" personality has started to "take over". Something has to be done about that. I've taught her to avoid "switching" to another world, but it doesn't always work. In one of her personalities, she is a resident of another planet, and says such wise things that I'm starting to believe it. Maybe I'm going crazy already.