Ditched Fiancé For His Brother

I wield the blood‑mark power to uncover hidden affairs. Before marriage, I found my fiancé cheating with my stepsister. My stepmother even blackmailed me with my mother’s relics. At the wedding, I used the blood‑oath ritual to expose their lies and wed the duke’s poisoned dying eldest brother. Plots keep emerging. Can I truly take back everything that belongs to me?