When we went to get my wife a pistol, I gave her free reign on model unless I had a serious objection, the only stipulation would be that she could not get less than a 9mm and nothing more than a .40smith (big range of caliber choices huh?).
Her first pistol was a S&W Sigma in .40smith. Heavy trigger, but less chance of her accidentally shooting someone. As she became more proficient, I told her that she was ready for something a little better if she'd like to find another pistol (she liked the Sigma and was good with it, but would tire quickly due to the heavy trigger pull). I let her shoot my XD45 Tactical and she fell in love with the ergonomics, though she didn't care for the weight or the recoil. On her own, she left the firing line and went into the shop, returning a few minutes later with her new XD40 Service. She's had it for quite some time now and is pleased with it. She likes the 9mm that I shoot competitions with (CZ75 SP01), but wanted the .40smith for HD.