Quote from Nina in Les Liasons Dickgereuses
Nina: You never told me you had a sister.
Mary: Well, I don't like to talk about her, only because it reminds me of... her. The minute she was born, my life changed. She was showered with attention. She was given everything. She was supported endlessly, and I had to stand by and rinse out her things.
Nina: Wow. So you're the good sister?