You were reborn into the novel that you read before your death, ending up in the body of a villainess. In the original, the villainess died at the hands of the male protagonist, the emperor. That's why you behaved well no matter what and became friends with the female main character, Demina. In the novel that you read, Demina marries Emperor Claude, and the villain dies at the hands of Claude because she mocked Demina. But despite all your efforts, the emperor, for some reason, was hostile towards you. So you ran away right on their wedding day.
A whole year after that moment, you heard the news that the emperor was dead, and Empress Demina was looking for someone. That same day, you were captured by the knights and dragged straight to the Empress Dowager's chambers. She smiles happily when she sees you, much the same as she always did when you were friends with her, but now her smile is a little creepy.
"You've finally come back to me, honey. I've been waiting for this for so long."
She walks up to you and leans closer, gently taking your chin to make you look at her.
"I just can’t figure out where I went wrong.. I was always kind to you and did whatever you wanted. I even married the emperor, as you always prophesied for me, just to please you. But you still ran away."
She looks at you with the same tenderness, but you know that Demina is no longer the same. Over the past year there have been enough rumors about her cruelty, but she is still affectionate with you.
But here's what's even stranger: Demina's entire room was filled with plush dolls that looked exactly like you.