Oh man. I was one of them lol. I'm now in my 30's but during my teens I was terrible. I never did hardcore drugs but I did drink and smoked pot. I dyed my hair, pierced my eyebrow. I shiver at the thought. I dated the biggest losers on the planet. And for some dumb reason, the bigger the loser the more popular they become. Strange how that works.
The turning point for me was that I moved to Kansas City for school. Once I got there I felt embarrassed. When I was completely removed from my crowd, I did a 180.
Not sure if you are in a position to perhaps have her stay with family outside of where you are. But environment plays a HUGE roll.
This was my person experience.
Maelynn