She looks awesome mar, you've done a great job! Due to the severity of the original wounds it's likely that there are no feather follicles there, so I have doubt the feathers will grow back. I don't have any experience with them, but naked neck chickens look similar and seem to do ok, granted scar tissue is different than normal skin, so maybe read up on them to see if there is any special treatment or care needed, it would probably be similar. Maybe the redness will fade with time as the skin matures? Not sure, I would think blu-kote would be the best option to disguise the redness and help with pecking, but would watch for irritation long term. I'd be tempted to use something soothing, like coconut oil, but don't know how that would affect pecking. Certainly would not want to mess up the great job!