Personally my wife was taught by her father to shoot a .38 revolver and that is what she knows and could care less learning anything else. She is very sentimental since he passed. I support her decision and bought her a S&W 638 vs the Model 10 she learned on. She was carrying a .32 revolver before so It give me a little more comfort that she has a .38 that she is toting. She has shot my .357 but was not impressed with extra firepower. We spend quality time shooting and stress shot placement over power. She may not be an operator but I feel confident that she will not be an easy target and someone will be on the bad end of her GA firecracker attitude. I always joke that if someone were to take her that they will return her very very soon! LOL!
My wife is the same girl, except she learned on a 36. She now carries a 637 i got her, and heaven help the cretin that has her muzzle pointed in their direction... the extra umph of .357 doesn't work for her. At 5'3", 110, it just doesn't work for her. I have some .38+p stuff in my s&w 442 that im not so happy to shoot. In my 4" 586, I'll blast 158gr hard cast buffalo bore no worries, but in an airweight, .38 is ok with me...