Reprinted in Dozois' Year's Best SF and the author's collection, Strange Itineraries.
This story tackles some of the themes Powers has tackled over the years: that there are people who see more of the world than the ordinary people: "We both seem to be acting like lunatics," says Debbie, Roger's wife. Roger's wife was mistreated as a child, and he was abandoned as a child when they suspected something strange about Roger's playmate, which followed them wherever they moved.
"Decide what you want[, says Roger's childhood make-believe playmate, Evelyn,] so I can give it to you.
" 'Can you find Mom and Dad?' he whispered.
"Debbie instantly sat up in bed behind him. 'What? Are you crazy?' "Brilliant dialogue--plays on both Debbie and Roger. Roger and his parents do confront, but it wasn't quite what he thought. He's had more control over his reality than he thought.
"[I]f she could find even a scrap of that dress, and then hang onto it, it might regenerate itself. slowly, yes you couldn't be in a hurry, but if you were willing to wait... and she suspected that if the cloth were with her, it might regenerate her, too..."