She's 18, so I guess it's not as bad as it would be if she were much younger. Fortunately, she has a boyfriend who seems to treat her well, and has no substance abuse issues, as far as I know.
It has been difficult for her, I know, because she's always had a fairly good relationship with her mother. I bend over backwards to be there for her, because I have a feeling this situation will get much worse before it gets better.