Yes, she will eat the shells.Random question, once the eggs hatch does the broody eat the shells and remnants? I assume she does, but don’t actually know! It’s something no one really seems to talk about but I know many mama animals eat the after birth and at this time of their lives really need the nutrition, I would think a depleted broody would as well.
I usually remove them as the chicks hatch....carefully, without causing too much discord, but my broodies are 'trained' to accept my 'interference'.
This last hatch it was kinda crowded under there, I think she was glad to get them out of the way for more 'foot room'. 7 chicks hatched but I only pulled 6 shells, she must have eaten the other one...tho I haven't really cleaned out the nest yet(been one week today).
Oh, and...I don't candle much with broodies either, usually just once at about 10 days to pull any duds.