She is still laying eggs however, so I remain somewhat hopeful. I've got a second small tank set up with a 1: 3 mixture of oats and sand and am transferring half of her eggs into that tank. Other mealworms (often used for feeding) are raised on oats, so I am hoping that a high concentration of possible food will help the process.
Iron clad Egg
I still believe that temperature has something to do with it. Today I put her tank in the sun, and the thermometer read 125 degrees F! I am not sure how accurate this is, as I used my oven thermometer, and the metal may have heated more than the air temperature actually was, but I plan on getting a real thermometer tomorrow, so we'll see. I would not be surprised if it does get over 100 degrees F.