Oh, I agree...she did nothing wrong....and in this case, by the time she realized how large the offense was and might become, it looked like it had also become obvious that the guy wasn't going anywhere.
But, she, and everyone, needs to go from White or Yellow instantly to Red. And I know it's hard to be in anything but White when you are comparing prices on canned goods.
If the guy had bolted with the kid and the kid was lost forever, I can't imagine what mom would go through thinking she just stood by and watched, even though she was not over the shock yet.
As an aside on this event, I've stated before that I think that a motivation for some mass killings might be a suicide wish.... The coward doesn't have the courage to just off himself but needs to do something so horrendous that it is impossible to ever return to their life before....no way out but dying.
I do think this was this fellows motive...and to his credit, he did not harm the child or anyone except perhaps the cop who had to pull the trigger...and the cop had to do it. There might have been the likelihood that the guy wasn't gonna go violent and could have been "talked" down, but that can never be a certainty and surely not close enough to risk the kids life.