Broody goose

For the past few days it has been nearly impossible to get this goose off her nest. Today I couldn't get her to move at all. (And moving an unhappy goose, even if it is usually friendly was just not something I felt up to this morning.) I'm not sure if this is Agatha or Dahlia, because I can only tell them apart when they are next to each other, Agatha having slightly darker feathers than Dahlia. The other goose, Agatha or Dahlia, is very unhappy her friend does not come out of the coop to socialize. We have no gander and we have no draje, but we do have a rooster. Since the chickens are happy to lay their eggs in the nests the geese make, it could very well happen that she accidently hatches a chick. I truly don't know what happens then.