I am sorry for your upset and frustration. It is understandable.

She is unstable, though, and unstable people WILL be hot and cold and disappear on you, even when you've been so supportive of them.

She clearly has a lot going on if she was suicidal and harming herself. For all you know, it became too real for her and scary after inviting you to visit, and she knows she is unstable and probably not in a place to pursue real feelings or a real in person meetup. She probably got scared and frightened. Hence, going back online to pursue the fantasy of someone. Just my guessing here.

But the bottom line is: she is very unstable.

Also, you calling her a ***** doesn't help matters. I understand your anger, but lashing out in that way by name calling only is going to push someone away, even if she calls herself that and believes it to be true.