A Happening Problem

Drugs, alcohol, pills etc. are everywhere to be found during this century. But it's a huge deal, and i'll tell you why, becuase people are dying thanks to the effect of these narcotics. I have a friend, whose identity will be left unknown who is going through the worst times right now and she has no clue that what shes going to will eventually lead her to die. She developed a severe ulser by blinge drinking everyday, she bleeds black blood everywhere that can reach the surface of her body. This is something that gradually messes up her insides and could begin to overlap other health factors destroying her intestines and other vital organs. This young adolescent takes pills of every sort, but if you ask her what she took she has no idea, it's not like she cares either. The first time she was given to try weed was at the age of 12 and since the as been offered everything from extasy to heroin. She is a family friend and she told be everything because she says she looks up to me, but shes dying infront of me so i asked my psychology teacher what was the best thing to do and he sad to tell his dad so he could take action and help her because i couldn't do much with her health problems. What should i do? why?