I Became the Wife of the Hero Who Killed Me

I was possessed by the Duchess who died on her wedding night after drinking the poison her husband gave her. "Why aren't you dead?" "I'm not sure either..." I vaguely brushed off the suspicion with the excuse that I was resistant to poison, but the problem didn't end there. Everyone here regarded me as a trashy person who only caused trouble and ignored me. Apparently, the original owner of this body had such a personality. "Hmph, so be it." I'm a wealthy heiress, so what's there to be sad about? I decided to live happily ever after with a pretty cat and a cute companion gold coin. But― "Long live the Duchess! Long live the Duchess!" The people of the territory praised me. "Madam...