There is a saying " the truth will set you free", when I think of this chapter that is what comes to mind. Maybe not so much for River but very much so for Silver. But I think it applies the most to Davids family, which considering the truth that Silver told doesn't seem right, but without that truth of before would they understand the love and the freedom that that love gave to his family as well as Silver. I'm not sure if that is what you were trying to portray in this chapter but it's what I seen in it.