I don't know what to do about this girl i am like in like in love with?

Me and her are good friends and I have had a crush on her forever but the only problem is that she is like crazy into drugs, marijuana, ecstasy, oxycoden, and like random pills. Im clean cut, i don't drink or anything but I don't know what to do, like whenever she does something like that it hurts and i don't know what to do. Were freshman in high school btw