I live middle of nowhere and I'm always being asked to do homechecks for rescues, usually they are well over 100 miles away. It does seem a real shame for her that you weren't considered suitable, I'm sure a homechecker could have been found in your area. But if those are the rescue rules then those are their rules.

Poor sweetie hope she finds someone else who's willing to give her a chance.
Might be worth the rescue putting this fact on the posts to save anyone else being disappointed?