When someone is pointing a gun in your face, that is the time to calm down and realize that at that moment, your life is worth more than your dignity. There is plenty of time for revenge after you are safe.
I think you have wisely thought through what to do, or have had some training.
Personally, I have done neither, but I tend to react to situations calmly. My wife on the other hand, would fly off the handle if someone did that to her.
We all have different instincts, and will react differently to a sudden situation. To judge her with what she was unexpectedly going through is I think, over the top. I would point out the fact that she had to move, had to start her life completely over to deal with this. She reacted differently then you or I would.
The Peace Officer, on the other hand, knew exactly what he was doing. He is an Ass, and should be off the force, shoveling manure in a dairy somewhere.