"Pretty," perhaps, was not the term.

- In seriousness, though, Bellatrix, he may know nothing about England but he nevertheless wields a poisonous pen. He seems to be in Germany: surely you can encourage your friends there to flush him out?

As for capitalisation, I believe your reading to be quite correct. And there are many reasons why he ought to hate himself; as you may imagine, I am privy to them!