When someone is addicted to anything, drugs, alcohol, sex, gambling or unhappiness, there's nothing you can do about it. You can ask them to seek help, you can report them and try to force them to get help. But none of those things work. In order to force someone into help, you have to convince a doctor the person means to seriously harm themselves. This will enable that doctor to force the person into involuntary observation for 24 hours. After 24 hours, a psychiatrist speaks to the person. If they deem the person to be "alright," they discharge them. Do you know how easy it is to be normal during a 15 minute interview with a psychiatrist?

So they will get discharged after 24 hours. That's pretty much all you can do. It sounds to me like you can't recognise when your hands are tied. Meanwhile, you're not focussing on what you CAN control. I think you are creating a major unnecessary conflict for yourself that you can't possibly solve. I'm sorry. This is what I see. If I've hurt you in any way, I'm sorry. I know it hurts and I know you worry, but no matter how much you hurt and worry, nothing is going to change. Your friend has to believe she has a problem and has to have a desire to do something about it. If she doesn't, you can't do it for her.