My Lucy started laying about 11 days ago. She has 9 eggs in the nest. 2 nights ago she slept in the nest and stayed in most of the day. She got out a couple times. Yesterday she was in there most of the day; she hurried back to the nest when she saw me one time. She also attacked two hens when they tried to lay in the box too. She stayed all night last night. Today however, she's been off the nest about an hour and a half. I've never had a broody duck or chicken so I don't know how this works. My chickens are trying to lay with her eggs so I've been pulling the chicken eggs out when she hops out to get a drink. Any advice?