Looking For Advice Finding extra small boot sizes (ww2)

Hello all,

My friend is interested in starting a ww2 USGI impression in our group, the problem is she is extremely tiny and noone has boots that are even close to fitting her. she is a US size 5.5-6 in womens (size 4 mens) and nowhere is selling anything close to that small.

I've thought about doing the custom boot orders from pakistan because that seems to be the only option I can find unless someone has any other ideas.
Thanks