Thanks for these thoughts, my friend! You've articulated the thoughts, I'm sure, of many readers who are having mixed feelings about what took place in this chapter. Billy usually doesn't respond well to people pointing out that he's being an immature little brat, even from people he respects. He's a fighter. He's usually never at a loss for words, so the fact that Amanda got under his skin and left him with nothing to retort is interesting. Billy has a lot of growing up to do.
I really appreciate your kind comments on my writing style. I try to make everything in the story mean something, and I like to reward readers who pay attention to details. I think of writing like planting seeds. I've planted some seeds earlier that are blooming now, and some seeds are sitting there in earlier chapters waiting to grow. I always hope that if someone re-reads the story they'll enjoy it even more because they'll see some of the fun stuff I've put there to find. It's a lot of fun, and a real joy for me!