“How’d you get in?” she asked, raising her voice a little after remembering no one was in the room but the two fo them. Draco thought for a minute.
“The Hogwarts sensors don’t count you with your brothers’ products,” he grinned in amusement. Ginny saw a small burst of purple powder, then Draco appeared still grinning.
“Hate to admit it, but they’re pretty genious.” He told her.