KristenH,
I am very sorry for what has happened, and I am very glad that it didn't get to your house.
For the past week, what with the cold weather, I have gone on long and loud, in several threads, about the electric, oil filled radiators being so wonderful. I have had one in one of my coops for 4 days. We use them in the house, too. We have no alarms in the coops, and would never hear an alarm if it went off. The radiator in the coop is now unplugged, and is coming out NOW.
I am aware that the radiator heater may not be the cause, but I am not taking any chances.
Thank you for sharing your painful experience, it couldn't have been easy. I wish you and yours the best.
ranchhand