This is how I see it. Neil is a whimsical idiot who's ignorant of how things be and quick to resort to his own judgment. Which means, a bad merchant. Now, let's put him aside.
I like how Constance directly went against what Scarlet told her, it establishes the dynamic between the two. So far we've seen Scarlet on the dominant side with Constance being pushed around and following her instructions. This was good and all, but if this continued on, then Constance would be nothing but a puppet for her. Constance makes it clear that she is a character of her own, and Scarlet is just something akin to a mentor to her.
I agree with what
@Scrabbleman and
@zz2000 said, it's a good thing Constance didn't tread the blood knight route. After all, it's less about her and more about other characters. In Korean and (mainly) Chinese novels, "small-time" villains like Neil are stripped bare of any humanity left and humiliated to no end because that's what is just; let them understand not to mess with the MC. However, it only works if those characters are expendable, with no depth nor dimension
like the MC.
However, that can't work in this series. When Constance decided to throw a saving boat, what she did is actually giving depth to Neil's character and, consequently, everyone connected to him. Ultimately, her action says that these characters are not some expendable cardboard-cut pions to satisfy the author's sadistic tendencies borne from excessive narcissism. They're people with lives, and their livelihood is under a threat. The boycott made an extreme loss for the Bronson firm (or whatever its name) and everyone who works there is suffering due to it. Neil's Grandpa, for sure, but also their shopkeepers, their suppliers, their employees, and those people's families. Constance reached out to them, telling us that they, indeed, exist.
I want to dissect Kate's role. She's clearly all-in to support her besties, but she doesn't want to be treated as a tool. It could mean that she'd give anything needed to the extent of her power as long as Constance told her beforehand.
What I find interesting is that Constance feels a stab on her heart when her brother said righteousness brings justice, as she had learned the true face of justice. There is no longer the pure, ignorant daughter of honesty. Only a girl, now a woman. This might lead to her eventually going overboard at some point, completely forgetting who she was, or who she supposed to be. Potentially speaking. This, I hope, will be balanced out with Scarlet who's obviously grown a soft spot for her. Perhaps, someday, their role would be reversed.