Hi, My 7-year-old Eater Egger hen, Biddy, is sick and I think is in pain. She has not laid in about 18 months. Her abdomen is large and very hard at the back. I'm pretty sure she's either got cancer or began laying internally awhile back, and it's coming to a critical point now. My question is, is there anything I can do to help her be more comfortable until the end, or is it better to just put her down? She's still eating and drinking and seems interested in what's going on. She holds her tail down most of the time, and has trouble walking now. It's pitiful.