It is hard to imagine a more devastating form of terror than that entailed in the dislocation, hardship and destruction that would accompany an America returned to a pre-industrial state - except now with its population crowded into cities that could not function, with a military unable to protect us or to maintain order.
But in the weeks before her death Amy was "deteriorating to the point she could not function", said Mrs Killiner, who believed that her daughter was still withholding information to protect her.