I have a two year old barred rock 6 days ago she hide and wasn't in the coop at night next day she was found on her side legs not working( holding her up). Her comb still is red and healthy looking. Eyes also look good. Was eating first 4 days now only eating sparingly. I have been giving her tylan 50 for 6 days. She does have mites that I dusted for first with de 2 days ago I started using garden dust to try and kill the bugs I also have been giving her fluids, water with added rooster booster. She's not getter better but also not getting worse. Any ideas?