I am so sorry. :hugs I've had a couple of birds over the years that mourn hard enough they stop eating. It's tough to watch our birds pine away in mourning.
I am so sorry for your loss. :hugs Chickens can mourn over their flock mates, they are flock oriented creatures who need others of their kind. They can pine away over time after a loss, I've witnessed mourning birds in my own flock after a close pal has passed on.
Moving her could definitely...