The gushing review you cited is user submitted. I certainly wouldn't make a decision on what my teen was going to read based on what some anonymous person posted on Amazon. The one that actually IS a product of ALA is the one that is far more cautious.
I would probably consider that book to be appropriate for very mature teenagers, and probably useful for one who was recovering from an abusive homelife. But that's just a preliminary decision based on those two blurbs, one of which could have been posted by the man who kidnapped the two boys in Missouri for all anybody can tell.
"posted on Amazon"? It's on an ALA.org web link!!