One of the first things DH taught me about Uzis is that they're a piece of crap. (We own and shoot guns. A lot. But, we're, ya know, intelligent.) Even on single shot, the recoil and the power of the bullet cause the gun to climb, unsafely. It's a known thing. It happens with .45s and higher calibers all the time. Hell, the instructor probably would have been safer in front of the child instead of behind her. Turning the damned thing onto full auto was sheer stupidity, and if a dead man could be charged with his own murder, he should be.

The parents? Are to blame. The instructor? Is to blame. The child? Should be put in a good home, because, Bob knows, she isn't in one now.