Karla shook her head. "Nothing," she said. "Never mind."

She had a feeling that explaining it to Topher wouldn't do much good. But she remembered how insistent he was that he'd understood Ender's isolation...

"Look, I'm just not gonna tell, all right? Right now, there are whole worlds vanishing without a trace. Give me some credit for having priorities. And by the time we fix this, it'll be too long since it happened for me to run and tattle. So as long as it doesn't happen again, I won't tell."

The Wiggins.