Mou Kyoumi ga Nai to Rikonsareta Reijou no Igai to Tanoshii Shinseikatsu

Vera is the wife of Carol, the crown prince, and as such has always put her utmost effort into her marital and royal responsibilities... But then one day, he tells her that he's no longer interested in her and is getting a divorce! Banished to a remote region, she begins to enjoy her newfound freedom to its fullest now that she has been released from training to become queen and the official duties she could never get fully accustomed to. As she does so, the former Prince Alan comes to visit her, and notices a certain change around her residence...?

(from mangaupdates)