Take her to the store with you and let her pick out the one that she wants and is comfortable with (grip, trigger pull, etc).
This is the way to play it. It can be very helpful to go to a range that has numerous pistols for rent.
I am not a Glock fan for my personal use (grip angle) but a G19 Gen 4 was what first came to mind when I read this thread.
RS
Women may surprise you if you let them pick their own. My wife's first pistol was a 4" S&W Model 28. A couple of years ago, both my wife and daughter picked S&W M&P9 compacts for carry without any input from each other or me.
Given her own choice, my wife simply loves her M&P15 with a red dot and would use it for everything, including deer hunting, if I allowed it.
