Molly Weasley: Ginny, what is it?
Ginny Weasley: I was only wondering when Harry got here.
Molly Weasley: What? Harry? Harry who?
Ginny Weasley: Harry Potter, of course.
Molly Weasley: I think I'd know if Harry Potter was in my house, wouldn't I?
Ginny sees Harry's trunk and owl in the house and asks her mother about them.