We have a little silkie sitting on just one egg. If it doesn't hatch after 3 weeks, what will she do? Keep sitting there indefinitely, or give up and go out with the rest of the girls again? Is she likely to start laying and go broody again immediately? Also, she's got a golf ball under there too. Should we take it away so she doesn't keep sitting on it and ignore the chick, if the egg hatches? Thanks!