Link was quiet a moment- one, he was evaluating how far to bring the wall forward without the size starting to defeat the purpose of having the kitchen its own room with three walls to work with instead of one, and two, letting it sink in that Zelda just conceded the point and gave up what she wanted without feeling like he'd kicked her in the process. Or at least, not looking like she felt that way. Given how often she'd gotten what she wanted stomped on by her father for what he wanted, he was ... a touch surprised.
Pleasantly surprised, but still a touch surprised.
But, rather than say anything about that, not with an audience, he decided to give her an amused, mock-gloating look. "Did the queen just yield to the knight?" he said, making sure it was obvious that he was teasing without being insulting to her intelligence about it.