I've been quarantining my buff Orpington (Karen) after an injury. She's better but still moving slow. She is in a second coop and run so the flock sees her and even lays next to her but with a fence between them. I keep trying to let her out to move back in with the flock but I have 1 hen that targets her as soon as she's out of the run. This hen jumps on her back and pulls at her neck feathers (no blood spilt) Is this behavior just re-establishing pecking order or is it aggression? Karen gets submissive when the hen jumps on her but I then grab her and put her back in protection. Should I let the encounter continue to see if it works itself out? Or should I keep her separated?