Zero heel is going to be problematic, because finding truly flat boots is something like finding a winning lottery ticket; it *could* happen, it's just not very likely. The best option for your friend may be to find a pair of flat lace-up boots that she likes, and then get a pair of nice button-detailed spats from Etsy.
I didn't use any keywords to find those previous boots; I, um, just happen to be very familiar with Clockwork Couture's stock. Go figure. :)
Re: SFD inquiry
I didn't use any keywords to find those previous boots; I, um, just happen to be very familiar with Clockwork Couture's stock. Go figure. :)