[His smirk isn't for her or her conclusion; no, it's for the whole situation to begin with.]

Nope. That's the part that made this all hell. It belonged to another faction of mages, who'd been missing it for a long time and wanted it back badly -- and they knew for a fact it couldn't do what it had just done. So they thought I was spinning a crazy tale to hold onto it because it was so valuable and useful, and I was an arrogant little snotty punk.