I'm not saying that Amy's parents don't love her-- I would never, because I'm not that arrogant and I know that's not the case. What I am saying is that you have to make someone WANT to do it. They have to REALLY see how much they have to lose if they don't get themselves together. I mean, sure, Amy's career isn't the best right now, and her relationship with Blake disbanded, but does she truly realise that it happened because of the drugs? Does she realize that she can't have both things-- music and drugs, family and drugs, good friends and drugs, etc? Of course someone has to want to help themselves. But there's no reason the people close to her can't make helping herself seem like a much better alternative to whatever they propose.
If nothing else, Amy should at least be in some mandatory intense therapy, because she's not herself and she's not seeing clearly.
I know your not saying they dont love her but belive me ive gone through it in my own family, a drug/alcohol addicted person is so wrapped up in their little world and routeen of addiction that they can see no further than that, if they dont want help you simply cant help them you can sit for hours and hours endlessly trying to get them to realise what their doing to themselves but its almost as if the addiction blinds them to the real world, the feeling of addiction overules most other things which is why many drug addicts steal from family to get a fix because the fix means more than anything to them. Mitch and janis have had to put up with this heartache for ages now i dont blame them for realising that she has to want it for it to happen.