Does my chicken have a chance of survival after a dog bite?

Hello everyone!

One of our chickens had an encounter with the neighbor's dog today. It now has a bite wound between its wings. We immediately went to the vet, even though it was Sunday. He roughly cleaned the wounds and stitched the skin together to keep the muscles in place. However, he's worried it'll all become infected… It's been given painkillers and antibiotics, and I'm supposed to come back tomorrow for a check-up and to get the medication.

Now Estelle is lying in a nesting area, separated from the others, and isn't moving. I've placed food and water within her sight.

What do you think? Does it even have a chance of survival? We don't want to torture her unnecessarily, and we're concerned about whether it even makes sense. What's the latest time she should eat or drink? And how can I tell if she's not eating or drinking because she's still scared, or if she's not eating because she's in pain and suffering?

I would really appreciate your advice and opinion!

The worried, still somewhat inexperienced chicken keeper Jessi