Short answer... Only if they're on PCP and she's a crappy shot. I seriously doubt that a "normal" person will continue advancing after being shot, just once. That part of the brain that says, "Hey! Stop being a dumba**", usually kicks in after being shot once! On a side note, I've owned the Keltec P-11 and I'd recommend your mom get that, instead. It's a 9mm parabellum and she can load it with defense (hollow point) rounds, which gives it a nice wound width with acceptable accuracy at close range. I've had lots of experience shooting guns, so I'm pretty decent at it, and I kept a four-inch spread at thirty feet with hollow points, which isn't too bad. As a bonus, it's extremely compact and was (not sure if it still is) the smallest and lightest 9mm when it first came out. It looks almost like 007's PPK... Which is a bonus on my nerd-o-meter!!! Good luck!