Chicken has had one closed for about a week. Initially lethargic, not eating or drinking for about 2 days. We separated her from flock. She began drinking and eating again on day 3 and doesn't seem to be as lethargic. Her eye is still closed. Other eye looks fine. Should I continue to quarantine or put her back with flock? The eye looks a little swollen but not as bad as first few days.