Here comes the nag.
Once again, self defense has more to do with skill than the equipment.
Send or have her go to a good training facility.
The type of bullet doesn't matter if it doesn't hit the target.
Recoil isn't a consideration either, with training.
End of nag.
Walt Kelly, alias Pogo, sez:
“Don't take life so serious, son, it ain't nohow permanent.”