Here's the wife's current ride (she's 5'1"). It was a NOS 92 Paramount 46 running on 650s that I picked up this year. A wrist injury necessitates the aerobars for longer rides and whimsy necessitates the cow squeaker horn.
Here was the previous ride, now taken over by Number One Son. 2001 or so Fuji Ace SE in a 43. Chromoly frame and Sora drivetrain. I purloined the 7 speed STI shifters for other projects as the Jawire Faux Barcons are much more kid resistent and less likely to trigger, "Well Dad, what happened was.." whereby my ears seal shut and eyes glaze over.....
I had a similar quest to find a proper fitting bike for a shorter spouse.
For most shorter women, the issue is usually top tube length rather than standover as the limiting factor. It's very difficult to find a sub 50cm top tube on a 700c bike and itty bitty stems lead to "'1975 Buick LeSabre with underinflated tires and bad balljoints" handling since the normal 90mm + leverage isn't there.
B