She ended up with a prolapse which I treated and she's been fine since then.
Yesterday afternoon I saw her in the nest and she was there again when I went to close the coop door. I took her to the house, cleaned some poop off her feathers and tried to feel around for an egg. I think I can feel an egg from the outside below her vent, but attempted an internal exam and couldn't feel anything. I crushed up a tum in water for extra calcium and tried to give her some. She took a little via syringe but wouldn't open up for much.
This morning I put her in warm water in my kitchen sink. She ate some of the food (layer pellets mixed with water plus the tum) and drank lots of water. She stayed in there for a little over an hour but wouldn't sit down, so her vent was never submerged.
She has been pooping some, and to me it looks like it's mixed with egg white. She still won't sit down and isn't eating/drinking. What else should I do? I know time is of the essence. Thank you in advance!