I have a 32 week old Black Australorp who was laying for me every day. She would never lay in the nest box, but chose a spot in the garden under the tomatoes. Once we harvested the garden, her private spot was gone and she threw a daily fit wanting me to fix her a spot somewhere private to lay. No matter how many times I put her in the nest box, she just hopped right back out and laid her egg somewhere else. About 1 1/2 months ago she stopped laying completely. She seems healthy, and I continually check the backyard for eggs in case she is laying somewhere else. But there are none. How long can she keep this up??