Cluck- the few times I have left the chicks with mama, she was picked on unmercifully by the others protecting her chicks. I don't have separate quarters and everyone free ranges during the day. I do have a large pen built around an apple tree and has grape vines growing over the top. When the top is completely enclosed by the fencing I'm putting up,(for raptors) and the weather is better, the babies will go in there with a mama or two.
In fact, I have usually found that the hens that don't like much attention from the males go broody, and the hens that get constantly bred just pop out eggs and leave the nest as soon as possible. Going broody seems to be the way a hen takes a "vacation".