(((((((((biiv))))))))))
It is so very hard to accept someone in our lives that probably won't leave us and that is there to support us. Especially when everyone else has left or nobody understands.
Not your fault for trying to not get hurt and leaving before other people leave you. Not at all your fault. It's a defence mechanism, I know I do it too. Pushing people away so they don't get close and then leave you high and dry by your lonesome again.
I don't think you really want to be alone, deep down, you just don't want anyone else to leave.
What about printing off this post you made and giving it to her? It sounds like stuff that might help her help you.
I wish I had answers to your questions, but you're not alone. I feel disconnected an awful lot myself.
(((((((((((biiv)))))))))))))))) take care of yourself