Naturally, she's concerned; as soon as he stands and stumbles, her eyes widen, and she's standing as well in the off chance that he falls--he doesn't, he manages to regain her balance, but the damage has been done. She frowns slightly in response, before quietly saying, "I see..."

If he doesn't want to talk about it, he doesn't want to talk about it; she can understand that much. Nonetheless--

"Please, take care of your health. In a place such as this... it is all we have."

And it would sadden her quite a lot if something were to happen to him. That's the last thing she wants, really.