No wolf she's fine. I'm lucky if i see mine broody of the nest, I think she gets up in the morning before the others get moving to much, but then again she is staying on her eggs despite others trying to share the nest. There are only like 2 herbs and 1 guinea she lets near her right now and she doesn't move for them.
If your hens are trained to come to treats get some mealworms or make some eggs and see if she will come to that the extra protien is good for her right now, but don't stress about it as long as she is off the nest at least once a day