I wonder what is going on with that rooster. Usually they are more protective of the hens and the hens are the ones that are jealous.
I don't like how vicious he is and I would keep an eye on him for sure, I certainly would not trust him around any new chicks if you let a broody hatch any.
I usually find the flock gets use to eachother but not if they are doing that kind of damage.
If your hen is really sweet I would actually seriously consider a new rooster if anything.
I don't mean to be harsh but I ruthlessly weed out my roosters, I will only keep gentlemen around my girls and his attitude will wear off on to the hens, they will never accept her if he won't.
I hope her eye is doing better. Alot of people give the one that needs to be seperated another hen for company so they won't be alone but you would need to make sure the hen is nice.
Sometimes a chicken will keep pecking at an injury just because so you should probably wait until there are no visible cuts and then add a friend in.
Chickens are flock animals and cannot live alone for long.