Sorry to hear that your hen was attacked, but glad that she is on the mend and you have access to and can afford vet care.Just had a hawk rip my hens neck apart.so much tissue exposed in neck there was no way it wouldnt get infected so at day 2 took her to vet for antibiotics. She said leave it open, no bandage or wrap. Hibiclens patting wash to site 2x/day, pain med, antibiotic 2x/day. Big flap too she was afraid wouldn t adhere and would need to be surgically fixed w anesthesia but with the above treatment regime adhered to its healing well. Antibiotics are key. Yours is infected if it smells and your bird is suffeting. Get to a vet. Your sweet girl is counting on you.
Unfortunately, vet care is not always an option for most of us. I know that this thread is long (12pages and counting) but the OP has stated several times that seeking vet care is not an option. This bird has also been on a course of antibiotics and she is being lovingly cared for by the OP and her young attentive assistant the best they can. Hopefully she is on the way to making a full recovery.
I'm rooting for your hen and the OP's as well!