It sounds like she may have polio or listeriosis. I would start treatment for those immediately because they won't hurt her even if that is not the problem. You will need to treat every 6 hours with thiamine and penicillin. Here is more information:
http://www.goatworld.com/articles/listeriosis/listeriosis_gwmf.shtml
http://www.goatworld.com/articles/listeriosis/listeriosis_gwmf.shtml