"But, my dear sister, can I be happy, even supposing the best, in accepting a man whose sisters and friends are all wishing him to marry elsewhere?"

"You must decide for yourself," said Elizabeth; "and if, upon mature deliberation, you find that the misery of disobliging his two sisters is more than equivalent to the happiness of being his wife, I advise you by all means to refuse him."

"How can you talk so?" said Jane, faintly smiling. "You must know that though I should be exceedingly grieved at their disapprobation, I could not hesitate."

"I did not think you would: and that being the case, I cannot consider your situation with much compassion." (chpt 21).

Elizabeth is at times even light-hearted to her mother:
Not yet, however, in spite of her disappointment in her husband, did Mrs. Bennet give up the point. She talked to Elizabeth again and again; coaxed and threatened her by turns. ... Elizabeth, sometimes with real earnestness, and sometimes with playful gaiety, replied to her attacks. (chpt 20).