Maybe it will work. Can you use her as a brood mare if you can keep her comfortable? Do you have a picture of her? I was thinking it was the one with the endocrine problem (can't remember what you called it).
It should work but it's not permanent.
I would definitely like to use her as a broodmare, if I can keep her comfortable. She's a nice mare. There is a pic of her on my who's who page.