Thats what I was thinking as well, I would wait to try to hatch in the spring. duckings wouldn't really be able to survive in the cold of winter. I'm sorry
Do you have a drake with the females? What kind of duck is she? Domestic ducks don't just go broody when they lay eggs. What is the climate where you live? If it is approaching winter like me or already cold she will most likely not try to hatch you can try again in the spring.