Thornton quirked his head to the side at Dante's response to the professor. Whhhhhy would you directly address the fact that the man was carrying a rock as if it were a pet. As for the Room of Requirement, Thornton didn't care very much. If he truly had need, then the room would find him. And if he didn't, well, then he didn't need to find it.

But it was the Professor's reply to Dante that had Thornton really looking at them both with wide eyes. How was this even a conversation? Pebbles? What even?

Thornton, however, had a need. Stepping forward, he cleared his throat. "I'm.. I'm sure that he didn't mean to imply that, uh, Pebbles was lacking in any way or meant to suggest something that would cause her harm..." He paused, hoping that he'd adequately interceded on Dante's behalf.

"But, back to the extension charm," he said hopefully. "Do you think it's something a first year could manage? Or am I likely to accidentally extend my foot? Or blow up the bag?"

Because it was full of books. And that would be terribly sad.