On a show around Thanksgiving, Racheal mentioned she was away from home for a few days and when she returned home she found out the power had been out but she didnt know for how long. So she threw away her food just in case it had thawed.
My wife and I had the same problem because we evacuated for a hurricane for 3 days here in florida. We found a little thing called a ThawMometer we use now anytime we go away for a few days. It was only $5.00 We got it on line at TheThawmometer.com but I think you can find them in some grocery stores now. Hope it helps you next time. Love the show and your food!!!!! KevinCooks.