I know he can't just leave her because the whole thing about her wanting to leave his "orphanage" is most likely a lie but it would be more interesting if he does let her go. Dude has other kids to take care of, really.
I'm glad I'm not the only one who was just utterly baffled the entire time in this chapter. And it's not even that the translation is bad or spotty (as far as I know), but just what is happening in the plot just makes me go....