Looks good. Give that wound a few more days and she should be as good as new. If you keep Mildred away from her, you don't need to worry about re-injury.
@Wyorp Rock, I believe, advised keeping the abuser separated from the flock for several days. This will allow your victim to develop confidence and the flock to establish a pecking order without the abuser. Then re-introduce the abuser. She should have had an attitude adjustment and not go back to her evil ways. If she bullies again, remove her for several days and repeat. I would think 3 to 5 days each time. Ideally, I think she should be in a situation where she can see the flock but not actually interact with them physically. Wr call this a "see-no-touch" setup. Of course be sure she has feed, water, oyster shell and grit. Good luck! You can do this. And of course if all your efforts fail she will make lovely dumplings.