"Umm. Just a little bit." The dog would probably have a stomach ache later, but the way he was gobbling the ice cream up seemed to suggest that he didn't mind it so much. So she just scratches at his ruff as he eats, tipping her head up to smile suddenly a little awkwardly at Harry.

How to go about this.

"It wasn't really Hermione who told me about the magic? It's another boy from your world. It's not really important who!"