[Of course he didn't want her to worry. But seeing how deeply involved she seems to be in this, he can't just tell her to stop. That would be all sorts of stupid.

So he returns that frustrated look with one of calm neutrality, giving a curt nod.]

You're absolutely right.

But put too much weight on it, and all you'll do is cause a burden for yourself that keeps you from what's important. Like making things right again.

That's what you want to do, isn't it?