Honestly at this point I think most authors use it as a marketing scheme. Slapping reincarnation onto their works will get ppl to read it because they're so popular. Personally I find it dumb & a waste of potential but its whatever ig
May contain spoilers
Probably learning information, past memories can be utilized. I also think that it could just be something about her personally? Like she reincarnated and now is a the only princess, compare the two lives? These are just guesses based of other stories that I’ve been reading though
Ibhave same question. And if she was adult before why she still act like newborn baby? Using ultimate weapon called woman tears （￣へ￣）
She was abused (for a very long time; she was a slave before yknow) and it seems those memories seem more like dreams than memories belonging to her; her past life is really just a past life.
I thought it has something to do with the family curse. Maybe those memories will help or are needed to lift the curse.
As far as she knows those memories were dreams she had.
She's not an adult. If u read early chapter she just had a dream of her past life often. So she didn't have an adult mind.
What's the use of her remembering/dreaming about her past life?