When he introduces himself, the girl's mouth grows into a wide 'O' of surprise, and a moment later she quickly and politely bows for him.

"It's nice to meet you, sir. My name is Madoka-- Madoka Kaname."

She makes sure to finish the introduction before she uprights herself again, focusing on his question.

"And my home is.. um. It generally doesn't have monsters or dangers the way a lot of these worlds seem to have.." Sure, there's the whole matter of witches, but since that's such an unusual thing even for her own world, she's opting to skip over it for now. No need to make this unnecessarily complicated for him. "But it does have a lot of modern appliances, like televisions and phones."