Someone already spoiled, what you're saying is quite wrong
I don't think I'm wrong tho, they said that the original Beatrice was going to die anyway and another soul was meant to take over her body, and that soul is the soul that's currently in Raeliana's body because The old Raeliana messed with the soul switch thing that was supposed to take place on the day that the original Beatrice dies. So she stole Beatrice's body from the current Raeliana...I guess
if you're saying that they switched souls, then yes you are right. the one living inside of raeliana's body, is beatrice's soul, and vice versa. beatrice didnt die. i think that the sickness they both are having is beacuse they both do not belong in those bodies.
what they were talking about (about the fact that actual raeliana was gonna die) might be because the fate of raeliana was to be kileld by her boyfriend (ya know, the jackass at the begginnig), so i'm not sure if it means that raeliana was sick to begin with. i dont know, i just read some spoilers and made ipothesis from what i understood, so im sorry if im wrong
So the real Beatrice was destined to die, and the current Realiana was supposed to transmigrate into her body, but the real Raeliana took that spot and switched places with her.
I guess this was supposed to be a typical transmigrated into another world story, and the story would've started when the current Raeliana's soul entered Beatrice's body, but shit didn't go as planned乁༼☯‿☯✿༽ㄏ. Kinda sad that the old Beatrice is dead tho