Wait im little bit confuse here.. is she reincarnated or revive (same life)?
so the manhwa is a bit rushed in the beginning and doesn't do a good job at explaining this. i started reading the novel and it said there that this was her first life. then she dies like how it is in the novel, reincarnates in the modern times, lives her life until she gets killed again. and now we are back to reliving her first life from a certain point. pretty much how it is in doctor Elise if you read that one
it wasn't mentioned in the manhwa but basically this is her 3rd life, she was Princess Cayena in her first life then reincarnated to the korean girl (forgot her name) with no memories of her first life except for novel she read at that time and again reincarnated in her 3rd life as Princess Cayena again,
hope this explanation helped
Oh noo... I dont like her