I hope she shows up for you. That's happened to us a lot. Some don't come back. But, the winner was one of our hens who dissapeared for TWO MONTHS (and that's no lie!) last summer. She showed up again, and proceeded to job share on the nest with another hen, and co-mingled with the others like she'd never been away. It was like seeing a ghost when she nonchalantly became part of the flock again! She must've been broody somewhere, but I sure don't know where...we looked everywhere.