Caramel is amazing and you are doing a great job! I think she will fully recover. The hawk reappearing is a problem. What is used to enclose the run?
My run is only chicken wire a.k.a. poultry netting, but I would like to upgrade to hardware cloth at some point, as hawks can reach through the chicken wire.
I only allow my girls to free range while supervised, as we have hawks, too. And eagles, coyotes, foxes, raccoons, mountain lions etc. I try to play ball with my border collie as much as possible while the girls free range, as I think a dog running around the yard is a deterrent to most of the predators. By any chance do you have dog?