She knows how that one ends, and she finds it interesting that he backed off of it. She wonders what it means. That he's afraid it would upset her? That the suggestion, however jokingly, of his own death distresses him after what he's been through these past couple weeks? Maybe something deeper and older?

"When you're done cooking," she affirms. "After we eat we'll go to bed and stay there, okay?" She frowns. "Although if we're going to sleep, Sherlock needs to watch me..."