"Thanks," he answers, and gives her hand a quick squeeze as a nonverbal thanks as well, before getting out of bed and grabbing his crutches, heading towards bathroom.

He pauses by the living room to let Sherlock know, in case Joan gets tired and wants to sleep, or they want to discuss the case, or anything else. "I'm gonna take a shower," he says, and leaves it at that. He doesn't bother to mask how drained he feels.