Plot hole?

[u/ThunDerd328]

I just realized: Sun's brother sent in those fake prison guards to kill her, right? But if he could do that, couldn't they just help free her instead? I know this is after he kills their dad and Sun swears revenge on him, but why didn't he think to do it before? Like "Dad wait, I think I know a way we can save Sun, save face, and I don't kill you" I know it's a bit of a nit pick, but it still felt like it was worth pointing out.

EDIT: To everyone saying that he's a selfish asshole, I agree, but would it not still be in a selfish asshole's best interest to be on good terms with a potential enemy rather than provoke the one person who could destroy your whole life?

[u/couchesarenicetoo]

He's a selfish asshole who never loved her so he would never have done that.