How's is she doing today. Any treatment advice from the vet? I was reading up a little on botulism. Take time to check all the nooks and crannies of the coop and run look for anything moldy such as bedding or grass, standing water or dead animals (mice and such) that they could be getting into. Also is your feed and water raised off on the floor? I would raise at least the water just set it up on a few 2 or 3 inch blocks so that can't kick as much dirt in there. Part of what i was reading was botulism is much more common in winter when everything is wet. Only treatment info I found as far as online info was offer lots of vitamin water and pray for the best. If they only got a little they could recover but if the paralysis gets to thier lungs, heart or throat there isn't much that can be done except wait. Good luck i hope she recovers