Wait I wanna know...
Spoiler!!!
So basically the Raeliana we know, our main character with the duke rn, is actually the original Beatrice without her memories of her life there. She was sent to "our world" by the actual Raeliana to be able to inhabit Beatrice's body, with the help of the dark sorcerer. The og Raeliana was jealous of Beatrice and wanted to be the main character. It's kinda confusing, but that's why the duke was almost automatically attracted to her too. Even though her soul was in another body, she's still his fated person! I'm not sure who pushed her tho. I hope that makes sense! I had a hard time wrapping my head around it.
this to be honest helps me understand the story much better #－.－)
I had to read like 4 different explanations but i finally got the spoiler twist, but now i wish i hadn't because damn!!! That's one good ass plot twist! I didn't even see it coming! MC just got a lot more interesting lol but I'm sad i spoiled it for myself :')