[Alex Murphy]

You're just evading the question with a personal insult.

Which part of the phrase "law-observing Catholic" do you consider insulting?

[Campion]

I know full well that the term "law-observing," coming from a Calvinist, is an accusation of Pelagianism or "works-righteousness"

That's an insult. That's a big insult.

Moreover, it wouldn't matter if she had said "chocolate-pie eating Catholic"; it's still evading the question with a personal slam, yet another ad hominem.