@MCX01
I think the entire point of this story is that if she knew her own fate, she could have changed it instead of trying to force it on someone else, the MC basically became raeliana and had to deal with all of raeliana's problems, but in the long run she changed that fate, while OG raeliana stole beatrice's body from her and ended up as the villain of her own story.
Basically OG raeliana could have relied on so many other people, but because she had no trust or faith in them, she only brought misery to others, hence why her fate is so sad and pathetic, had she not switched their bodies, it's possible that she could have avoided her own death, hence why while the mc more or less did the right thing, it is still a fairly tragic story for both of them.