...Well, being around here wouldn't count much for fresh air.

[ But the garden's no longer an option, it looks like--that just makes him furrow his brows in thought. Wait, he had an idea... ]

How about we take a walk and hang out in the field for awhile?

[ It's a place where they could get some real fresh air, and maybe he can come up with something to get her mind off of things. Even if he can't, again, there's the idea that they're not surrounded by these walls, which do right now feel ever more like a prison. ]