You are free to disagree with me, but given the degree to which you anthropmorphize your birds, I would hypothesize that your interpretation of their behavior may not be accurate.
Perhaps rather than try to introduce Isabella back to the flock, it would be easier to reintroduce the rest of the flock to Isabella one at a time so she only has to negotiate one social interaction at a time. Maybe Stanford first and then Victoria, followed by the others one at a time over the course of the day.
Perhaps rather than try to introduce Isabella back to the flock, it would be easier to reintroduce the rest of the flock to Isabella one at a time so she only has to negotiate one social interaction at a time. Maybe Stanford first and then Victoria, followed by the others one at a time over the course of the day.