There was a person on this blog who intimately knew her (I would say he studied her), whatever was going on didn't work. I have volunteered the last two years at our homeless program at our Church and do have some experience with the homeless. You cannot "know" anything about the psychology of addiction because it is relative and different to every person. There is no universal answer that will work with everyone and people cannot remain in treatment forever, we do not have the resources. 

You can figure out that I am sneering ?