Or another one. According to the 911 call. It wasn't her job and she didn't hand the gun off. Supervisor said the AD was responsible and was the person they went to before and after it was used
There is one possibility that would exonerate her from any blame. She did do her job properly and someone put a live round or rounds in after she had set the gun up.
According to everything that has been published (that I’m aware of) there are only two people who could have done that.
Do I think that happened? I seriously doubt it.
I also base this on her direct negative personal actions on her immediate prior film and her well-documented gun negligence as armorer on that film.