...you're not listening ( reading?)
Ok, to make this clearer for you, I'll separate Beatrice into two.
Beatrice, the protag of the story, and Beabitch, the body the original raeliana is currently in.
Our female lead, Eunha, is a THREE TIME REINCARNATE(at least so far)
Her first life was as Beatrice, the true Beatrice, and the protagonist of said novel. Later on she reincarnates as Eunha, which is her second life, in a "modern" society. And afterwards, she is transmigrated into raelianas body.
So, what does that mean?
That means that Eunha = Beatrice.
The current Beatrice, Beabitch, is the real raeliana.
Capiche?

please, eXpLaiN ( ̄∇ ̄")
what happened