It seems so to me Anne Elliot is determined to think the best of Captain Wentworth, when he was arguably mean to her on at least four occasions. She is not as forgiving to her cousin, Mr Elliot, although his behaviour is at least as good as Wentworth's. Sunday travelling is not a very great sin. As a captain of a warship, Captain Wentworth must have done much worse. (BTW Captain Bentwick does not seem tough enough to be a captain of a warship, but Jane Austen should know). Another thing is that Anne Elliott does not seem very charitable to Mrs Clay, a widow. So what if Mrs Clay wants to marry Anne's father? Why shouldn't her father re-marry?