Is she dumb, she insulted him first just because he tried to warn her
about her "trusted Knight" with legit information and when he reacts to her insults with anger, understandably, he's the bad guy, I don't see how he's at fault and needs to apologize. Honestly she's terrible if she thinks it okay to call him "the rotten wind of the Dennings jealous and full of himself" which she assumes but he can't call the other guy an illegitimate which is facts