Meed more information
I don't mind reading about what people envision in their nightmares of personal defense. AFTER ALL, you can gain defensive experience by getting into a lot of fights or by reading and thinking through what others invision as catastrophic events. I guarantee you that if you practice the former you will pick-up many physical (ohwee's), mental ones hurt a lot less.
However, it's hard to practice mental gymnastics with only half a story, Kinda like half a training exercise, it really doesn't get you anywhere!
In this one caliber isn't and tactics are important.
Good Luck, Be Safe
First, with the most, WINS!
Regards, Scattergun Bob