sleeping in nest

I have a black copper marans who recently went broody for the first time so I gave her 6 eggs. She successfully hatched 5 of them and then the next day she killed them all. When I found them she was still sitting on the nest because there were still two eggs under her that were laid by other...

Babies that are 5 weeks old today. Mama is still broody with them and they are still sleeping in a nest box. Should I take the nest away? She brings them to ved earlier than the other chickens go to roost. If I take her nest away, is she just going to being them to a nest box that is for laying...