I have a bantam BB Red hen with a prolapsed vent. I've done everything I'vee seen on this forum to correct it and it keeps "popping back out". She hasn't been laying and there doesn't appear to be an egg stuck. I've treated her with preparation H to help with the swelling but to no avail. How long should I expect her to be like this? She has been secluded from the flock for a week now.