I came up with this same thought. Not only this, money is a problem anyway. Maybe it is not of the level it might have been with a poor Wentworth but money is definitely an issue. Also, she is in a home where she is barely acknowledged, let alone much cared about. The way she is treated is abominable. I feel we find Anne assessing her situation and realizing that possibly the risk of living life with a poor Wentworth would have been worth it to live it with someone who loves and cherishes her and with whom she cherishes. (Feeling very sorry for her.)