The ONLY reason that woman is still alive is that the offender simply didn't want to kill her bad enough to do it.
She did just about everything wrong she could have.
You DO NOT stand & dialogue gun to gun.
You DO NOT alow an armed offender to get close enough to try to disarm you.
And so on.
It is entirely possible, and this is a clear example, to do everything wrong & still survive to look like a hero.
Sheer luck & absolutely nothing else.