At first I thought she was just broody. She was in her nest all day. I noticed she crushed the egg she was sitting in so I kicked her out and cleaned it out. Her stool was runny as I lifted her out. She didn't move much after that and didn't eat treats when I tossed them to her. Note I did treat all the chickens and the coop with permethrin to treat lice. What else can I do for this poor girl?