Not sure what you mean by marks, but here is my answer and I hope it helps:
The novel Persuasion, and the importance and significance of its title is precisely because the story's main character, Anne, accepted the advice of a Lady Russell, a lady who convinced her through "good will advice" that Anne should leave her Naval Officer lover, Captain Wentworth, because Anne deserved a much more priviledged kind of relationship with a much richer man. Lady Russell did not mean wrong. She is a Lady who wants the best for both Anne and Anne's mother, hence, she was suggesting this from the goodness of her heart.
However, after Anne left Wentworth, she was unable to stop loving him, yet, as a member of the upper classes, she stubbornly stuck to her choice and said:
"a strong sense of duty is no bad part of a woman's portion."
In the end, we are left with the question on whether Anne is a heroine in her own life story, or if she is just a snob with a penchant for mental masochism.