An inventor, then! She was clever, no doubt. "You work in the Engineering department, then?" He'd heard of it! Not that he'd ever be able to be part of it.

He did have to warn her about mixing magic and Muggle devices, though. "I don't think you should. Magic's known to interfere with Muggle devices. Things like your radios and stopwatches don't work on Hogwarts grounds---the air's too concentrated with magic, and it stops them from functioning."