Who tucked Titus into bed while at the house? Were his pajamas in the house or the van?
It's not quite clear to me that he was even sleeping IN a bed, or where in the house. There is nothing to suggest he was even wearing pajamas, just a diaper. When it's that cold, and with a toddler who is wearing a diaper and obviously might wet himself in the night and get even colder, and might kick off a blanket (if there even was a blanket), footed jammies would make more sense, but . . . nothing here seems to make much sense.