@Hanen what @endo54 said and that is exactly why I like this way more than other isekais where they regain their memories. They are already different people that just happen to remember something. I certainly don't fall back into my past self just because I remember something about my past
another example would be a child with perfect memory that reads the memoares of someone. Even with all that knowledge it wouldn't make that child suddenly that other person
@timesen , @Hanen, @endo54, @Raydnt
I think this Bertia has her previous life's personality, which is completely different from original Bertia. She might have learned a few tricks, but she's nothing like ojou-samas around her. It's just that in previous life, she wasn't a successful person and spent a lot of time on otome games. Which is why she's willing to let Heronia take away her fiancee (and is treating reality like a game in general).