Was there any drainage when she scratched it? Is there a hole in the skin (which can be common if an abscess breaks open?) If you have some BluKote or Gentian Violet, it can be used to mask the wound so that the others won't peck at her. Betadine or iodine would also work and are disinfecting, but all are staining and take a couple of weeks to wear off. I'm glad that she seems better.