So, I took the two eggs out of her nest, broke them and let the dogs lap up the contents. They were not fertile and the yolks were watery from being old and warm. Poor Jemima went back to her nest and tried to find the eggs and fix the nest. Finally she gave up and ambled back to the other ducks. Hopefully she will not go broody until next year and she can recover over the winter. It is wonderful to have a duck mamma raise her babies, but when her own health suffers, then it is time to intervene. Poor Jemima. I sure hope she will have enough strength to stay warm over the winter.