@karolyn I don't think she was angering him. For me, she was holding her ground. The marquis barged in their residence (he came without an appointment) was rude to her and threatened to kill her. It was just right to show that she wouldn't be fazed. Otherwise, the marquis will think even worst of her.
something something author sucks at consistency something something qcing this series is hell something something laughing at this series and the people who work on it.