Can you call her and talk? I have attempted suicide twice, and I think if I talked to someone and got help I wouldn't have gone through with it. I don't know what your friend's mental state is, or how receptive she is to help. It's sounds like maybe she was reaching out to you. If you can't talk to her directly, than can you talk to a family member? It is quite possible that she may resent you for your help, but if she is a danger to herself, then she needs help. You may be able to call 911 and tell them you think a friend is a danger to herself. The cops will go check on her. I hope everything is ok.