Hold Me Like You'll Never Let Me Go

"Isn’t there someone you can write a card for? A grandmother or an aunt, perhaps?”
Carl wants to laugh. He doesn’t know if he even has any aunts, aside from the wives of Frank’s brothers. And his grandmother’s in prison.
Then Carl gets an idea. “Can I make one for a sister?”
His teacher looks confused. “I don’t see why not,” she says.
Carl grins and picks up the marker.