Thank you everyone for your kind words and advice. I was able to get into a vet finally this afternoon. After my regular vet, I called 8 other local vets. This vet felt bad for me and just let me come in and wait even though they had no appointments. I had to wait a long time but wanted to know if Duchess could make it or if I needed to let her go. They said Duchess should be able to survive. They said her back puncture wound wasn't extremely severe. They gave me antibiotics and pain meds and told me to try to syringe feed her every hour until she's eating on her own. They said she does not have any broken bones and that she doesn't appear to have any internal injuries. I don't know how she managed to get away from the predator. I am shocked and amazed. I will help her heal but it's hard to look at her or be around her right now because she reminds me of her sisters. I feel terrible about this but I also feel numb and like I'm in a waking nightmare. I can't even look out the window into my backyard because I expect to see them scratching around in their run but it's empty.