My father inlaw has a broody hen. She started with 6 eggs. She is in a hidden nest. She has been on the nest for about 2 weeks. The other hens have laid to her over the last few days, probably up to 15 eggs now. Should we candle the eggs to get her back to the original 6? She has so many now she can not cover all of them. Another week and the original should hatch out. Can we candle and mark them to make sure we keep the goods ones for the next few days if they lay to her again.?