Sirius noticed that she seemed rather familiar with magic, and he couldn't help but find that interesting. It still fascinated him how many magic users were in this town. He didn't say anything, though, and just put the wand back in his pocket.
"Like I said, no harm done. Don't believe we've met before, though," he said.
"Sirius Black, at your service."
He gave her a half-teasing courtly bow, his eyes gleaming with mischief.