They are forgotten and not considered flock mates.
Try this, let the outside birds outside the coop/run. Put the 'injured girls' inside the coop/run and lock them in there. Feed along side the fence. Near dark, pull the injured birds back to where you had them, let the outside birds into go to roost.
Next day - repeat
Third day - Leave two outside birds in add the injured birds so it is 3 injured to 2 outside Inside the coop/ run, the other pair is still outside. Now there may be a dust up, but because the numbers are pretty even it should settle quickly.
This night let the other outside birds in, just before dark. The urge to roost will be almost as strong as the urge to fight. And do this on a day you can be down there early in the morning just to make sure.
The thing is - is the coop/run is strange to the injured birds. They feel insecure in this set up, and then they are being chased to death, again not good for their confidence. By letting them be in there for a couple of days - develops some territorial rights, and the outside chickens see them in there, and all is fine.
I have tried this multiple times - it is an easy set up for me to do.
Mrs K