Wow. She handled herself well, especially with the jam, and perhaps moreso with the close-in engagement.
The peanut gallery comments are a little infuriating. I guess I'm speaking from the peanut gallery myself, but I would almost rather get shot than get stabbed or slashed, based on images and video I have seen of the latter. I would not want to trust my life with a taser in something like this example.
I could envision a situation where if there were two or more officers, one deploys the taser, and if there is no effect, the other is already on target and starts pulling the trigger. Just one on one though? The gun was the right call here.