I'm floored

by the posts on Facebook of someone I used to know, whom I was going to try to reconnect with by sending a friend request, and I found that she is in a very dark place, writing incoherent paranoid ramblings of everyone all around her. I struggle with fairly mild mental illness; I'm high functioning with bipolar disorder II and anxiety issues, but this sounds like a full-blown psychotic break. I feel so bad for her, and I'm tempted to reach out to try to help, but I don't think that would be a good idea. I don't know enough about her situation to know if she is in a place where she wants help, and I'm not equipped to deal with this sort of thing, and I know it. But, wow, it's so sad. I don't know what to do.