We have 22 Buff Orpingtons. One lady decided to get broody. We left 4 eggs under her a few days ago, and now she has 13 under her. She is gathering the eggs other hens are laying. Should we let her hatch something, or will she eventually get out of her mood? She's been this way for three weeks. At this point, I don't know which eggs are the oldest. What should I do????