I have the PPQ in .40, and the trigger really is amazing for a striker fire pistol. Frankly I'm liking it so much that if it came in .45, I would seriously consider it as my main carry piece instead of a 1911. It is the most comfortable and well-fitting gun I've ever shot. Head and shoulders above my Glock 23 for me, but as I've mentioned around here before, I've never been able to shoot a Glock well because they don't "fit" me well. The 23 (I believe it's the .40 version of the 19) has been pretty bulletproof though.
The PPQ comes with three interchangeable backstraps. That being said, I have large hands. Mrs Smith fired it with the small backstrap, and though she really liked the gun, she said it still felt a little too big in her small hands. This from a woman who shoots a full sized M&P 9mm for IPSC, so the PPQ may be a great ergonomic fit for a man, but perhaps not for small hands.
Balog, you might also go to the Faliaphotography site. She does gun and holster reviews geared towards women, and you might get some relevant info on other pistols out there that would work well in a woman's hand.