I literally thought the same thing. I was so confused like was she the real princess or was she somebody that just read the book. Or are they both two souls in one body or something. Cause when she speaks about other people from the past she says my not the princesses past. Or when she was trembling it seemed like trauma the princess would have not the reader.
maybe it’s two soul like the common sense of a dukes daughter or the villian savior where the character went to a different world, read the book and reincarnated back to the world/book ╮(￣▽￣)╭
More like one soul with two memories of their different lives phrasing it as 'two soul' sounds like there are two different person in one body
so the real princess was the one that reincarnated to her old body. like the way she acts it seem like the og princess + the brain of other world girlΣ( ￣□￣||)