What happened to her?
If any of your coop has a wall or side open the the outdoors and made of chicken wire, this was done by a raccoon. Raccoons will reach through 1 inch chickenwire and grab at anything that flies against the wire in a panic (often done at night when the coon scares the birds off the perch in the dark). Then they literally pull the chicken through the wire in pieces. So-called chicken wire is pretty worthless as protection against a lot of predators like raccoons, weasels, mink, and snakes.