Kalantha would probably be a bull and come at his wall full force. She's nosy like that, but she also knows her place and when to not push any further, though she may try a little bit, oops. I can see him as her Bug Buddy. The friend that she just loves to bug and hang over at the worst, well not really worst but rather most inconvenient of times. But they'd both know that all he'd have to do is seriously tell her to back off and she would, because she really only does it all in good fun.