Dissociation, while not healthy, had become something of a self-preservation response for her when she was under duress. Especially since the last war. It was how she could separate herself from the thing causing her distress and remain logical when emotions were too high. It came in handy when she had time to utilize it, but when the fight or flight reactions of external stimuli were too great she struggled to get herself under control. She couldn't have done this in bed.