I have had a number of women try one of the subcompact PX4s, and - if their hands/fingers are such that they can manage to reach the trigger and use it - they tend to like the little critters. Unfortunately, they end up buying something else because the 9mm PX4 subcompacts have been very hard for them to find.
Some of the ladies that have had trouble managing the DA pull and overall qualities of a J-frame, SP101 (or even LCR) found that a PX4 subcompact's DA pull and behavior was quite manageable; this was/is with, in turn, the factory spring, the Beretta Cougar D spring and the 12# LTT PX4 spring. The LTT 12# has provided the lightest DA pull of the lot.
(It has even pleasantly surprised a few congenital Berettaphobes.)
The fly in the ointment is that on my PX4 with slicked up innards, the SA pull even with the 12# spring has proven a bit light for some shooters. I am toying with trying an 11# on a bone-stock subcompact and comparing the two.
gn