The Question and Answer section for The Scarlet Pimpernel is a great resource to ask questions, find answers, and discuss the novel.
From the text:
“Is it possible that love can die?” she said with sudden, unreasoning vehemence. “Methought that the passion which you once felt for me would outlast the span of human life. Is there nothing left of that love, Percy . ....
What chapter are you referring to?
It means contemptuous or cocky: boldness or disregard of others.