One of our BO's didn't come home on May 28. We thought a predator got her. Turns out she had found her way behind sheets of plywood in my barn to hide her eggs. (BTW, 2 days ago we found 25 eggs under the deck where another hen is hiding them.) I noticed our golden retriever has been hanging out in an unusual spot and on investigation, there she was, 3 weeks later. She's lost a lot of weight, and is very weak. I took her to the coop and placed her next to a bowl of water, and shes drinking. She literally stumbled and fell as she tried to walk. What advice please?