I am nodding at all the wisdom in the posts above.
If she wants a shaved head, she can shave it. That's what people do.
Please give yourself a break and take as good care of you as you try to do for her. She can take care of herself. The hard question (asked with love) is...can you?
I was the last of the Let Go'ers. Or I would let go and grab back on. Not one single time, not ONE, was it a good idea to hang on and continue enabling my son.
Let go or get dragged. One of my favourite expressions here.