Everyone makes mistakes, I personally see a lot wrong with this, full auto with a little girl, not a huge stretch to think something is going to go wrong someday, too bad it was a deadly mistake, RIP, I feel for his family and the girl, that has to be traumatic...
I taught my sons young, {11 years old}, with a single shot 22 long rifle, on a bench with it on the sand bag sitting down, only after handling the weapon with no ammo in it, practiciing safe barrel placement.. Its a long structured recipe to follow to integrate kids with guns, sounds weird, but its what you are doing, you are teaching a child how to live with guns, there are guns in my house, albiet locked and safely put away, but my ccw can be out in the open sometimes, and I want my kids to know how to handle it, and when to handle, and when not to handle it...
Maybe this little girl already went through them steps, you can do everything right and still end up with a bullet in your head, its a gun, not a pillow, its dangerous, and when you start adding dangers to it they compound quickly, 1-its a gun, 2- its a pistol, 3-semi/full automatic pistol, 4-more than 1 round in it, 5- young, frail, female, inexperienced, shooter something is going to go wrong, I see experienced guys shoot by accident, I have done it once, cleaning a 1911 I have 2 of, I had one assembled and fixing the sights at the range, the other was on the table I didnt put rounds in it yet, I pulled the clip out of the live one, and then someone started talking to me, I sat back down, picked up the live gun with a single bullet in the chamber and the safety on, unlocked the safety with my finger on the trigger!!! BANG, luckily if I pick up a gun I always face it in a safe direction so it just went down range, I played that over in my mind 100 times and it could have been bad, because I thought it was not live and it was...
This story has a bad ending, and anything to do with guns rite now is going to be news, sorry to say, the person who should be held accountable for this is no longer here to do so, and that is a shame...
Guns are dangerous as soon as a human picks it up.... I am the first guy to make sure no one shoots me, I seen someone get shot and I have seen animals get shot, it doesn't look like a good time, I would like to have the same amount of holes in me when I go to be as when I woke up..