My favorite hen came down with a respiratory infection (we believe) & i began treating her with tylan. I secluded her and was having to hand feed her. After 4 or 5 days it appeared she was doing much better and I moved her back outside in her own coop. However next day came a bad storm and she got cold and wet. Following morning she could not stand up. Her leg is dangling and toes are curled. I'm giving her tylan and hand feeding her again. Can someone please help me?!???