When my wife first started to carry a gun, she chose a Bersa Firestorm in 22 LR. She had tried a 38 revolver that her chest thumping husband (me) had suggested, and thought it kicked too much and had given up on the idea of a carry gun until she shot a Ruger Single Six. She said "I want something like this."
Her husband, not being a total idiot, went with her, and she picked out the Bersa. She must have put thousands of rounds through that little gun. And I mean that literally. We found out that it really liked CCI mini mags and with them ran like a watch. She got an extra magazine for it, then a CHP, and a carry purse. She carried that gun for a couple of years. She never had to use it for any serious social work, but I'm pretty confident that a swarm of those 40 gr solids would have persuaded most anybody to go look for something else to do.
With that little Bersa she learned how to shoot a gun. She learned how to clean one. She learned how to carry one. She learned when to shoot, and more importantly she learned when NOT to shoot.
Over time, she gained confidence with it, and in herself and in her ability to handle bigger guns. She started to shoot my 9mm's and my 45. One day she said "I need a bigger gun." Now she has a Glock 19 that she picked out herself.
That Bersa still goes to the range with her though. I'm sure she'd get rid of the Glock first if she had to.
By the way. If you can find one, the Bersa Firestorm 22 is a good choice, IMHO.