if she's doing drugs and drinking she falls in the category with pretty much every older teenager in the west so making a big deal out of it isn;t going to make anything better, probably worse. u need to start worrying if she's doing anything like and to a lesser extent coke (but if she hasn;t got a job i doubt she'll be able to afford charlie)

anyways maybe u just need to sit down, just the both of you and tyry and really find out y she's doing what she's doing.

make it clear to her how worried she is and try and find out y she cuts herself (adrenaline is such a bullshit excuse) if u want an adrenaline rush go and buy a can of red bull, don;t take a kinife to ur arm.

try and reason with her and let her know how worried you are for her and tell her that if she doesn't open up to you and tries to help herself then u'll tell her parent's, doctors ro whatever to try and get her help and you would rather her fall out with you and her get help then u not do nothing and her stay the same.