Christina, many many moons ago I was involved with a guy and his group of friends that were less than stellar. My parents did NOTHING ... didn't say a word, didn't offer advice, nothing. I was with him for 3 years ... I spent LOADS of money on him to "impress" him about how wonderful a g/f I was to him.
After I left him, with not much of me intact, but lots of lessons learned the hard way ... my parents admitted that it drove them nuts to see me wasting my life on this guy ... but knowing the type of person I was (tell me NOT to do something and it's the first thing I'd do) they simply stayed completely uninvolved ... to the point of not even asking about him, "forgetting" his name LOL ...
As the "older" version of your daughter ... hang in there, we do learn our lessons, just the hard way!!!!
Marionís Zoo-Kyleigh, Raylan-cat, Echo-TAG,