I hope you don't give up until you're 100% sure that the m is not salvageable. This would be a good time to distance yourself from w as much as possible- let the phone go to voice mail, don't call her unless absolutely necessary. Let her have time to think. If you're worried that she's into something like drugs or some other destructive behavior, maybe you can bring it up to her father or another family member or mutual friend and have them check it out.
Be sure to strap yourself in on this rollercoaster ride!
