hmm can i ask roughly how old your friend is?? Im sorry shes done this to you. A friend of mine did this to me i let him go. Was quite angry for awhile with him.
After ten years we started talking again. He apologised. It was something he went through, not my fault.
I obviously hope that your friend wakes up to herself faster than this, but protect yourself ok? Its a huge world you will find many like minded people in it and some friends are better let go.