"You know about trauma bonding, right?" the agent asked abruptly. "Forget kidnapping victims, you see it all the time with battered women. They're isolated, at the mercy of their dominating spouse, going through intense spells of abject terror followed by even more emotionally draining periods of soul-wrenching apologies. The trauma itself creates a powerful bonding element. The things these two have gone through together, how could anyone else ever understand? It becomes one more thing that makes a woman stay, even after her husband has beat the crap out of her again."