I was abandoned by my fiancé because I am barren.

"I hereby annul my engagement to Salis, daughter of Earl Kagachi, a woman incapable of bearing children." You've got to be kidding me! What is this letter?! I am! Still unmarried!! Still a virgin!!! Why would you think I'm infertile?! My fiancé, Prince Staal!!! ...Ah. I got so angry seeing such a rude letter that my rage ignited. As the daughter of the Kagachi Earl House, which oversees numerous secret arts, I must regain my composure and grace. Yes. In the past, I, alongside Staal and the sons of marquises, cardinals, and knights, defeated dragons like a true hero. Back then, I was known as the "Stone Woman," boasting an impenetrable defense. But now I've become refined in etiquette and culture, and I can even subdue barbarians without killing them, you know? However... my patience has its limits. To restore the peace of my heart and my graceful demeanor. I shall direct this rage at the sender of this letter—my fiancé, Prince Staal!! I will condemn this cheating fool who abandoned me!!