Movement caught is eye, and a second later, the paper butterfly fluttered toward him. He held up his hand, catching it on the back of it, and smiled again. He titled his head down a little, as if examining the paper creation, letting his hair fall from behind his ears to cover his cheeks. He couldn't be sure, but he thought he might be blushing just a little. Which, if you asked him, was stupid because it wasn't like that was a blush worthy compliment. If he had to blame anything, which he felt he did, it was the fact that he'd had so few conversations outside of his family that he merely couldn't distinguish a simple comment from a compliment. He swallowed and said, "It's a fun party trick." Not that he'd been invited to many parties or felt particularly comfortable at the ones he had been to lately, but this man and his daughter didn't need to know that.
Tristan's mother enjoyed that trick, too. However, when he'd performed it, he'd used his wand because he often had a whole menagerie of paper animals moving about, and he found it a bit easier to handle them all with his wand. Even when he was little, before he'd ever gotten his wand, he'd make little paper animals and stuffed toys move. It entertained him, and his mother liked it, and, honestly, he'd been glad to see the little girl liked it, too. He smiled a little to himself at the memory and made a note to make a bunch of paper animals for his mum for tomorrow.
"If you want, and if your daddy says it's alright, you can keep the butterfly," Tristan said, looking up at the little girl, then her father. He didn't want to overstep, though he didn't mind letting her keep it.