A friend of mine bought a STI Trojan a year or so back, loves it, but found she can't possibly conceal it on her person and doesn't like the idea of off-body carry. She was bored one day and started wandering around gun stores and stumbled across a Bersa Thunder .380 and just fell in love. Fit her hand great, she could easily rack the slide (something she could not do with my PPK), and she could conceal it in a variety of different ways.
We took it out to the range and I'll tell you what, that gun sure is ugly, and its got a few tool marks, but boy is it a sweet shooter. The only .380 available was my warmish handloads, and even with those it did not feel like a blowback gun. I love my PPK, but she's a harsh mistress and will beat up on you a bit, even though she's heavy. Its been a while since I've shot a 9mm, but the Bersa felt like one of the softest shooting centerfires I've used. Accurate, too, and very decent trigger, especially in double action. I didn't shoot it for groups, but just pulling the trigger as fast as I could recover from recoil I was still putting everything within 4-5 inches at 50 feet. She doesn't get as much pistol practice as I do, but she was still able to easily hold minute-of-face at the same distance. Ergonomics were excellent for both her itty-bitty hands and my large ones.
So that's another option to have her look at. Getting something she wants and picks out is key, though - it won't get shot if its not comfortable or she doesn't like it.