She just continues to look as pleased as ever. She has no reason not to be, after all.

"You're very welcome. And please, just call me Yuuko." She's only seventeen! At the question, she shakes her head, but that's only to the part about instruments. As for hobbies, doesn't everyone? "Of course I have hobbies! I'm the president of the Paranormal Investigations Club, so I like ghost stories and things like that."

And possibly causing them.