I was broken off my engagement with the crown prince, but I'm grateful since I'm not suited to be the nation's mother!

"Eleanor Rosecastle, Duke's Daughter! As of this moment, I hereby annul our engagement!" After receiving the engagement annulment from the Crown Prince, Eleanor mutters to herself in an empty corridor. "What a relief... My former mother-in-law was absolutely terrifying... The very first thing she said when we met was 'Bear me a son,' which was completely crazy... I'm still just a girl, you know?" "Um, I've been hearing everything you've said this whole time..." But having her overly honest mutterings heard by someone— If "I," who has memories of my past life, have been reborn as a Duke's daughter in another world, is an engagement with the Crown Prince or high-ranking nobility with duties really the greatest happiness? Wouldn't I despair at a minute-by-minute schedule? This is that kind of story. ※Also published on other sites.