This is my speculation only. I think the real raeliana is in beatrice body since iosa said that the real raeliana soul is still alive somewhere. So maybe real raeliana perform some kind of black magic and swap soul w/ real Beatrice. So the real beatrice go to our female lead and push her into raeliana body to stop the real raeliana. (i think i made it much more complicated )
The Raeliana that is in Beatrices body atm maybe the real Beatrice knew about the jealousy that the real Raeliana was feeling, so when Raeliana entered in Beatrice body, Beatrice “soul” went of looking for our FL (i dont remember her name srry but the one that is inside Raelianas body) to stop the real/original Raeliana owo
I tried to explain it the best i could( ̄∇ ̄")
As I recall Beatrice had 3 lives. The first was when she was Beatrice and her friend Raeliana was killed. The second was when she was korean and read the book of her previous life. The third is when she ended up in her friend Raeliana's body.
So with that, we are free to assume that Raeliana probably had two lives. The first was when she was assassinated and died. The second is in this timeline where she uses sorcery to transfer into her friend Beatrice's body in order to not only prevent her death, but with the belief that it would seal her faith with Noah.
What if the person who pushed and killed raelina in her world its a person with the soul of the real beatrice hoping realiana could stop the REAL raeliana (srry if its confusing u.u) ( ̄へ ̄)