This is narcissism, and here I do not hesitate to spell it out explicitly. The obvious is that he sees her only as an extension of himself, only as she impacts his own existence and not as an independent entity. He's not better than her, she's just not a fully formed character, she's an extra. But the more telling and scary part of the narcissism is that he thinks that by killing her, he has not merely stopped her but fixed things, erased his shame, as if it never happened. As if the people back in Iraq aren't still snickering, as if human nature and reality are subservient to the magical thinking of a man who believes a Jeep can alter what God already saw.