cowinthebarn. Welcome to BYC, sorry though under these circumstances. Dont euthanize your Barred Rock. Excellent job using the diluted betadine! Now all you have to do replace the petroleum jelly with regular neosporin (no pain reliever in it.) Neosporin will heal the wound quicker. So far, you're doing everything right and dont make any changes except the neosporin. Give your hen time to heal, and it will take time. Make sure her environment is clean, has plenty of food and water, and as long as she's eating and drinking, you have nothing to worry about. If you wish, give her plain yogurt (probiotic) with scrambled eggs (extra protein) mixed in her feed to make a mash. This will help build up her strength and immune system. Again, give her time and she'll be ok.