Do you have enough room in the run to section part of it off with chicken wire? We usually place new/removed birds in a sectioned off area of the run during the day and move them to a dog crate in the coop at night. This does take up quite a bit of room though and not everyone has that much space. Also, if you have the space, do you have a former best buddy or nice non-aggressive hen that you could move in with her? Two are much easier to reintegrate than one. I keep them separate at least a week or until everyone seems uninterested in each other.