Just found a mythic (it’s not in their catalog) 2000 Schwinn Homegrown Factory 13” frame (11” center to center) at my local co-op. This one replaces a Specialized Myka (no picture) that replaced the Univega in a post above. I had the fork on the bike shortened to 60mm of travel so as to gain more standover for my tiny spouse. We gained 1.5” over the Myka (and Univega) with this smaller frame. Also dropped 2 lbs over the Myka (26 to 24 lb). Some adjustment still needed…the saddle is way too low but she hasn’t ridden it yet.
If a small woman (< 5’3”) is looking for a mountain bike to convert to road bike, this is the size they should be looking for. Unfortunately, very small frames are hard to come by.