best friend is a drug addict

idk what to do anymore.

she’s 16 aswell am I, and we are in our final year of school. every night she does MDMA/ketamine/drinks. she smokes weed too but I can’t compare that to hardcore drugs.

I’ve said many times to her that I’m worried and idk what to do anymore.

I need someone to tell me what to do before I can’t do anything. please help me