Story is about tiny guns, yet no tiny guns in the story? Looks like a Sig 229 to me, but might be a smaller model. It's not a 238 or a 938, Sigs tiny guns.
I'm glad he only gave her one bullet.
Expert must have some pretty quick reflexes if he is waiting for the semi-auto slide to cycle. Not sure I agree that a revolver is not a pistol, nor that it can be fired faster than a semi-auto. Did I hear that right. Doubt the difference is measurable to the naked ear, nor makes much difference to the person being shot.
As far as the question, no one I know is looking at a .380. The last three women I talked to all ended up with a 9mm of some sort.