Rewritten fate: The Duchess's last wish

I thought that if the story played out as it was meant to, my wish would finally be granted. I could leave this novel behind and find peace. But even though the plot has already ended and I was executed alongside the villainess by my father, brother, and the male leads, why am I back where everything began? And what is this strange status I’ve been given?

[Selene Astralyon is my daughter. Anyone who dares harm her will face my wrath.]

Why is Duke Calyric Astralyon claiming that I am his daughter?

[Sister, don’t abandon me. I’ve already renounced my title, Solandris.]

Why is the villainess crying, begging me not to abandon her? This never happened in my past life.

[If you’re so willing to throw your life away, then give it to me. Become mine.]

Why is the tyrant crown prince saying such a thing?

[Sister, don’t die. Don’t abandon me again.]

Why are the villains so determined to prevent me from dying, from leaving this cursed story?