My 17 year old DD has started college last year and in spite of being bright, she is well on her way to failing / being kicked out of college. I think confidence is an issue. She won't accept any responsibility for her behaviour. Her friendship group is low achieving and low work effort and she seem to be doing her best to mirror their failure. Quite a few of them have dropped out. She lies all the time. She is smoking weed and it appears to be a very regular thing. I have caught her with weed several times and can smell it on her almost every day. She is not eating well` and constantly falling asleep - post smoke snooze I suspect. She spend hours on really heavy makeup - contouring etc yet her clothes are dirty. Her grades are starting to fail and we are butting heads on everything. I blame myself and I am miserable, she is miserable and we cant seem to break the cycle of conflict. I have tried to see if she will talk to someone but she wont. Does anyone have any advice, has anyone managed to salvage their relationship from this point? I am losing the will to live.