My buff orpington has been regularly laying eggs for about two months now. Last two three weeks, she sat in the laying box longer (for about 2-3 hours) than she first started to lay. Today she's been there most of the day already. She is sitting still and looks very enjoying. Is she already broody? We don't have rooster. None of our eggs can be hatched. 
Any suggestions to deal with the situation? or just let her be.

Any suggestions to deal with the situation? or just let her be.