I don't know any really good fitter who says women need a women's boot.my fitters for the past 4 years have said noo, no, women need a women's boot
Like Phil said, above, Tecnica's W2W program put the women's boot in a more upright stance and added a few mm of hight to the boot to give it more support.
The women's pro model could be a good fit for your desired flex, but I still think you should look for the right boot for you, not just the right women's boot.
I have two pair of boots in my quiver, the Tecnica Mach 1 105 LV and the Lange RS 110. I spent most of my winter in the Lange due to the balance of the boot for my LLD.
https://www.pugski.com/threads/long-term-review-lange-rs-110-sc-dual-core.7428/
To your point about downsizing:
I measure just over 24.5 and I wear a 23.5. I've never lost a toenail.