[Wow. That's a way more serious answer than he expected. So he pauses for a moment before answering, not wanting to be a flippant jerk somehow.]

She sounds like a great person. So I guess you've known each other a while, if you know her well enough to be able to get that across in a few words and a drawing....

[It's close enough to a question, even if his voice isn't quite inflected for that.

It's frustrating, after all, knowing a remarkable girl yourself and not being able to tell anyone her name. His mind just keeps looping back to that.]