I got an email last night from my friend who is keeping my horses for me. She had the farrier out, and is having issues with Kita. She did great on her front hooves, but when it came time to do her back ones, Kita fell over. She literally couldnt stand to put weight on only one leg. They tried both feet, but she couldnt stand at all. One time she about fell on the farrier. We will be setting up a vet appointment, but does anyone have any idea what might be wrong with her?