That's very unlike a cochin...She was a cochin. 3 of the babies lived. They were fine, except the one that was shrink wrapped which was my doing from lack of moisture. I rehomed the two that did well and kept the one that had issues(her growth was stunted from being shrink wrapped).
I gave the broody away and explained what happened. I couldn't keep her after she ate the chicks. That's how upset I was.
I don't blame you. That would be awful to see..