Just goes to show you how worthless 911 is most of the time.
Remember how annoying that conversation is and that seconds matter when something is happening.
Calling the cops and talking to them while people are in your house is just going to give away your position while the operator keeps trying to ask stupid questions.
Dispatcher is a job that really benefits from someone with communication skills, but often does not pay well and is depressing enough not many stick with it. So you get someone that is just filling the position.
Really the only certain benefit 911 provides is audio recording and medical help after the fact. It starts the ball rolling but the situation is typically over before help arrives.
She managed to defend her home from multiple armed adult men. We can say it would have been better if she did a number of things. But she got 3 men to back out of a violent home invasion.
If it takes more than those shots in an intense fight in the dark to hit never mind put down even a single target, having a low capacity weapon certainly seems undesireable. She fired all those shots and not one dropped, and none may have been hit though you often cannot tell in handgun fights.
I don't want to seem to be advocating wildly firing a gun, those bullets are going somewhere, but gunfights in the dark are not easy and she certainly had the element of surprise in her attack, which she may not have retained against the numerically superior force if they found her.
They had cleared some area and started to let their guard down, if they had started clearing new area their guard may have been back up with their gun at the ready.
I wouldn't be too quick to second judge her timing, just her results are less than what you can be confident in. Running out of ammo and physically stopped nobody, so she was vulnerable but still prevailed.
Some angles of fire are also safer, and if you choose to attack the perp at a specific time you can choose the direction they are being fired at from better than waiting for them to choose. You may have family in some directions, more people in others, but be free to unload in a couple directions with less risk. Clearly you would then want to fire preferably in those directions if you are letting loose lots of lead, and when that opportunity is close your time to act may be short.
What we do see is that the element of surprise is why she won her, even though she did didn't do things perfectly from an outside perspective. Her chances would have been a lot lower in a direct standoff without that element of surprise.