Elizabeth, in the solitude of her chamber, had to meditate upon Charlotte’s degree of contentment, to understand her address in guiding, and composure in bearing with her husband, and to acknowledge that it was all done very well.

– Jane Austen

Pride and Prejudice, Chapter 28. It may be a marriage of convenience, but Elizabeth during her visit to the Collinses is impressed by how contented Charlotte is and how much in control she is in putting up with Mr. Collins.