Sounds like you're treating the wound well.
If she's a bit down, offer her some electrolytes or sugar water, then encourage her to eat.
If possible, I'd cage her within the run/coop so she can still be near the flock while she recovers.
How is she doing?
Can you clarify what you mean by "giving her Povidone Iodine twice a day"?
Clean the wound with the Povidone Iodine, then apply triple antibiotic ointment.
In the photo, the wound is on the back of the head/neck, does she also have wound on the side of her neck too?
Is she...