Ah-ha! I have cleverly made it impossible for them to check!
"Right, but there must be other ways to check, right?"
Um... None that they know of! Ha!
"Okay, well, that can't have been the only wand like that. Even if that one's broken, Tedd's dad can just get another one."
He, uh, is no longer authorized to get one! Yeah! For reasons!
"Can't Adrian Raven tell?"
HE'S ON BREAK IT'S IMPOSSIBLE THERE ARE NO OPTIONS