Rey has the books, she has her experiences and she will have to forge her own path, be a Jedi in her own way. The old order is dead, the Sith are dead, there is only the Force.
Yeah that is true regarding her keeping the books; that’s the only story thread I think that will allow Rey to learn the rules in order to break the rules in IX. Just the way we leave off with TLJ does it seem like we’re shunning that idea, but I could be misreading this totally.