They gamed the system. It isn't a perfect system by any means, but it has these safeguards precisely because we are not perfect. The sad part is that you have so many lives destroyed by this event. I think sometimes that people forget that the parents of these two miscreants are affected by the crimes they committed, as well as the family of the victim. I suppose the best we can do is to console the victim as best we can, to make sure that she has the chance at a normal life. Hate can't defeat hate, only love can do that.