“Memory has ambushed her again, slamming down a wall between her and the present moment. Sometimes it comes in order, like a story, sometimes in flashes, like a series of snapshots. Sometimes it comes in a split second, cutting through the middle of another thought. It grabs her and won’t let her pay attention to what is being said around her. Other times it just settles softly down on her like a pillow, cutting off air.”