The already-developed reputation that Seoraj is building with his forge barely open is a good argument for his competence, which is now self-evident for her examination. He knows what he's doing.

(And he's got cute knees.)

"It was a clever trick." He doesn't know what the trick was, but even only comparing how long he knows he was gone to how long his aunt knows they were gone - there was a trick. One day, maybe he'll find out. Probably not, though. That sort of thing is miles above his pay grade, just like Sir Hellsing.