There is an old theory. You train the way you are going to fight. You do it that way because when the pressure is on, when it’s balloon going up time, you don’t want to think. You want everything to be automatic. Sight picture. Trigger control. Breath control. Peripheral vision for situational awareness. Avoid tunnel vision.
You also train to avoid unintentional discharges because they won’t help you when the crap hits the fan. But let’s say that she needed to shoot someone. In self defense. That picture would call her claim into doubt. The prosecutor would use it to tell the jury that the shot was accidental and negligent. Not taken as part of a need in self defense. She was lying to cover up her actions.
You do things the right way because that is a hell of a lot easier to defend later. If pictures and video exists and you are handling the weapons properly, pointing in a safe direction. Finger off the trigger. Not threatening anyone. Then if you do shoot you have an easier, easier, not easy time justifying it as self defense.
The more you **** around, the sooner you will find out.
But let’s say this woman popped a round of by mistake. I understand that some of the crowd was also armed. If they hear a shot, don’t you think they’ll shoot too? Bullets flying in two directions tend to be somewhat hazardous to the health of participants.