Guys about the 15 days thing--it's a mistranslation from the group. I was really confused about it so I read the official English translation of this chapter.
Tl;Dr she is thinking to herself "I can't get too comfortable, I still have to deceive them for two weeks.. I wonder what he will think...
@AnXi Just google for the raws, they were pretty easy to find. I won't put the link here since I'm not sure if that's allowed, but you shouldn't have any trouble finding them!