I get a sense from this passage, particularly "..could never be looked for again", that Anne is finally coming to accept that her path and Wentworth's lie apart in the future. It is easier for her to do this now that the breathings of friendship and reconciliation replace the pain of Wentworth's coldness when he first returned.

I'd say that only if she can achieve some closure over her relationship with Wentworth will she be in a position to get on with the rest of her life rather than living in the past. We have already seen her somewhat open to other possible futures in her reactions to Benwick and Mr Elliot. If Wentworth is going to marry Louisa then I hope for Anne's sake that she can move on.