We have had 4 eggs in our nest for about two weeks. This morning my hen got very up set and was making quite a bit of noise not totally unusual to be honest. Later when I looked she was not sitting on the nest and two of the eggs were out of the nest and broke open. Will she go back and sit on the two eggs that are left? It been 8hrs since I herd her making a bunch of noise. Should I remove the broken egg shells?