My 9month old barred rock, Lucy has been laying 5-6 eggs/week since the middle of October with no issue. Even since its been cold she still lays regular 4-5 eggs/week and I'm pretty sure she laid yesterday. However last night around 10:30pm when I went to check the coup she was in the nest box but no egg this morning, Then this afternoon she she in the box again for a good hour or more with my banty hen and the banty laid and there was an egg under Lucy but Im not sure it was hers(3 others have access to the box too and Im not sure if it was there before Lucy went in or not) and she is now in the box again. I have read up on egg binding and felt of her stomach and vent area but don't feel an egg. She was out in the yard today(but not as much) with the other hens eating some scratch I threw out and she doesn't seem to be in any pain when I feel her. When she is in the nest box I can actually pet her and life her up and she doesn't get all loud or crazy acting either, however she is very very people friendly and likes to be petted and sit in your lap. Do I need to be concerned with her behavior? And what other things can I look for, check or do for her? I do not have liquid calcium but I do have electrolytes(which I added to the water today) and some baby vitamins(poly-vi-sol) if any of that would help.