"Most of the food here is good. Kaylee and Simon tried to make it - tolerable, at home, but processed protein was the primary food source." River continued to lay where she was, all the same, looking between Harvey and the empty couch.
"You can sit?" River offered, sighing and finally shifting to sit up. And, more as an afterthought, she added a casual, "Thank you." She normally wasn't the sort to bother fussing with such things with the crew, but with others she could deal with the charade of good manners. It was partially a need to compensate for Simon, usually... though that wasn't so much a necessity anymore.