I came back from vacation to find two of my hens went broody. I put them in milk crates and one snapped out of it in three days. It's been a week now and the other one STILL returns to the next box first chance she is given. HOW LONG?! Is there anything else that I should be doing? I've got her in one milk crate stacked upon another so she is about a foot off the ground. I have to transfer her into the garage on occasion due to rain so she might not have been in "open air" the whole time.