悪役令嬢は旦那様と離縁がしたい！ ～好き勝手やっていたのに何故か『王太子妃の鑑』なんて呼ばれているのですが～

When I woke up, I found myself in the world of a dating sim, where the heroine had met a bad end. I was reborn as a villainess married to the crown prince! My marriage is on the rocks, and I've decided to leave and start a second life - right when I decide to do so and begin managing my territory, for some reason my husband's attitude changes... This is a story of a villainess's struggle to become a happy-go-lucky woman in a world of schemers! (Source:MangaPlaza)