My hen has sick since 1-5-2014. I have two barred rocks. Both are 4 1/2 years old. Both are wormed. Both have molted starting in Nov and have all feathers now. In past the 4 years they have consistently laid eggs starting around the end of Jan or beginning Feb. Second hen is fine. I noticed the sick one sitting on the ground hunched over and not in her normal spot for the evening on 1-5.. I bought her inside and noticed that she was underweight and her comb is pale. Crop was squishy. I also noticed that she had mites. Also yellow poop stuck to her feathers. I bathed her and kept her in overnight and dusted her the next day. She was not eating. I gave her some antibiotics and vitamins.I did not notice any unusual smells. I kept her in during the night and returned her to the coop during the day. In two days her crop was normal. She was still very weak but was eating some food like kale, tomatoes and corn but not her feed. Her condition improved over the next week and half and started acting normal.....like forging while outside, preening and talking to other hen. But she would take frequent naps. Poop was brown or green (from kale) But she was still nesting on the ground in the coop. Body posture was more normal. I would bring her in on the really cold nights. Everything was looking better til this past Friday (1-24) I found her in hunched position again this time with swollen distended stomach. Soft but firm. No hard lumps..... does not feel hot. Her appetite is good and is preening and talking. Pooping. Comb is pink. I have been soaking her in the tub and massaging her belly. I have read other posts and information on Ascites, Peritonitis and other things. I am considering culling her today, but I wanted to be sure it's the best thing to do. Would she still seem fine (eating, preening eg.) if it was peritonitis or ascites. Thanks for any help.