Maybe yours hurt her foot jumping down? Her muscles could be getting week from all that inactivity. I am afraid that Olivia's are too. I keep petting her while she is in the nest box and she complains and gets out and walks around. She hates to be touched, although she does squat for me, but not since she's been broody. She does seem to stay out of the nest box a little longer each day, but no eggs from her since Monday. I don't think she sleeps in it at night, but I have not gone out after dark to check. I don't think she is because Ash went in the box yesterday at some point and laid her egg and Olivia was sitting on it, so she was off it long enough for Ash to lay an egg early in the morning.
I'm glad your broody is eating, Olivia eats and drinks when I get her off the nest and has started taking dust baths and pecking in the garden. She is so funny, the whole time she is off the nest she makes a low clucking sound and flaps her wings a lot. She also is mean to the other chickens, she even pecked Oreo in the head and Oreo did nothing about it, she also chases the little chicks around, everyone of the chickens seems scared of her. I will be glad when she starts getting off the nest herself and gets back to laying eggs, she was laying everyday almost, so we only get around 2 or 3 eggs a day now. I love the EE's, but I may avoid them if they are always this broody.
We still have those hawks flying around here to and scaring my chickens, I think that has slowed down egg production too. With all the wild things around here, you'd think we lived in the country, but we're in the city.