There’s a lot that could be at play. Many women are scared of guns in general, so the first time it’s loud and jumps they want to be done with it, whether or not it actually “hurts to shoot”.
95% of them are also never going to carry on their person, at least IWB, so leave the “concealable” aspect out of it and get something that is easy to shoot. I’m not arguing that it’s substantially better to have it on you than not, just that they aren’t going to do it. Get them a purse holster and fanny pack, most of the time it’s going to be left in the car or on a nightstand.
A J-frame revolver is one of the hardest guns to shoot even marginally accurately, same thing for the mouse gun .380’s.
Personally, I’d step back to a .22 and outdoor range where there aren’t a dozen people banging off rounds inside a tin can next to her. Ideally, you could find a ”pair” of .22/9mm that she can practice and carry with.
I think the whole “racking the slide/one handed manipulation/mag changes are complicated under stress“ arguments are dumb. Yes, they need to be able to load, unload, and clean the thing safely, but if they ever have to use it in self defense there should already be a round in the pipe, and the shooting is done when they run out of bullets.