I went looking in some lesser-known places for OTK boots for Maya and didn't find them (sorry, Maya) but I stumbled on exactly the kind of classic riding boots I have been hunting high and low for:
http://www.shoemetro.com/p-155.....omens.aspx
Site says "Circumference measures 12 inches." !!!!! Could this possibly be true? I have a feeling that someone measured the ankle circumference...