She doesn't seem to understand why he's laughing, but it doesn't seem to be at her expense so she'll allow it and make for another doughnut while he talks.

"So you've got a magic dragon in your soul." She repeated back to him trying to warp her head around the idea. It wasn't hard since souls were a strange and vague thing in Ruffnut's young mind.

"So when he comes out you wrestle him and ride him around and then...what? Blow stuff up?" She sounded really hopeful to that last part. Because if this guy was even a little closer to being a Viking from Berk it would make her happy.