I hope your friend gets the help she needs. Drugs are not they way to deal with problems and the user must want to stop. I have been in and out of many rehabs but it did not help. I have been using drugs for 40 years I have dabbled in a little of everything but I would say heroin and opiate pain pills are the worst thing to try and get off of but if you put your mind to it and say I have had enough you will most likely need medical assistance to get off of it and be able to stay of. Take it from me I did heroin for 5years tried many times to stop on my own it didn't work I had to go in the hospital for 2weeks and then follow up with after care. I have done just about any kind of drugs I could get an heroin was the worst thing to stop.if I would have known how hard it is to stop I would never ever tried it.Please go to a medical facility and get help the longer you stay on it the harder it is to stop. Good luck��