I hate the fact that he died because of this but this was totally irresponsible on his part. You don't put a full auto sub machine gun in the hands of a little girl, especially one that's not a shooter. He lost his life and this poor girl is probably traumatized for life.
http://www.buzzfeed.com/claudiakoerner/firing-range-instructor-dies-after-child-accidentally-shoots?s=mobile