...after the one you quote proves to me that Mary's comments come from her observations rather than her personal experiences.

“My poor aunt had certainly little cause to love the state; but, however, speaking from my own observation, it is a manoeuvring business. I know so many who have married in the full expectation and confidence of some one particular advantage in the connexion, or accomplishment, or good quality in the person, who have found themselves entirely deceived, and been obliged to put up with exactly the reverse. What is this but a take in?”