One of our chickens, Death, is laying non-viable eggs with soft shells. She has always been a bit of an outsider in the coop. Keeps to herself. She has a malformed beak where the top is curved similarly to a raptor's beak, so the top and bottom do not meet up correctly. She eats from our hanging food container all the time and she is good sized. How is it, if this is indeed the problem, that she is not getting enough calcium when all the other chickens are laying fine? Any suggestions on what we can do for her? Thanks.