Thanks everyone for your thoughts.
This was her first hatch. She is a chocolate orpington and my super sweetest.
The eggs were all mine. I collect eggs each day. I had eggs from two consecutive days. I DO believe she laid another as I got an unexpected chocolate.
I think she was attacking the chick that was sick and all her chicks had scrambled and were freaked, but that is a guess. I feel bad taking her babies, but I NEED 4 of these chicks for my program so they are all inside. She seems forlorn today...
and it is hard for me to watch as she is my favorite.
I thought about just giving her a few because it is so sad! Should I try again?