[He's more than observant enough to know that he has made a misstep. It wasn't so long ago that they were curled up together and Yen was telling him about her recovered memories of home and her weariness and lack of purpose. If he said something that hurt that part of her, he doesn't want to let her laugh it off.]
Yen. [He catches her hands in his, expression serious.] What did I say?