my friend again

it me again i hope someone is awake..because i dont know what to do about my friend.. I put the story of my frined and her addiction beofre..it down below or maybe on another page..i told myself it would all be ok but its not only the vicodin..its her mood swings and her personality as a whole. For instance yesterday she took only 2.. The day before maybe 4 she doesnt remmeber. But today she wanted to get home to take more., Im trying to talk to her but shes is constantly in a bad mood telling me to leave and let her be..I dont know what to do because its not only the vicodin im worried about but also herself and her heart. Like she is constantly depressed now and pissed at the world..thus taking it on me..