
I totally get the confusion. So it's kinda of like the story Dr. Elise where she gets reincarnated twice. So basically her original life is as Ceyenna where she played out the whole plot of the novel. Then she is reborn as a Korean girl where she reads her own past life as a novel which is one of the reasons she felt so connected to the character Ceyenna in the novel because it was in fact her. Then her Korean self dies and she is reborn back to Ceyenna with the memories of both past lifes. She uses her knowledge of what happened as original Ceyenna and the novel (the novel gives her the perspectives and actions of other people that she wouldn't have known as original Ceyenna) to manipulate the situation.
I feel like they should've just left out the isakaid part and make it seem like she travel back in time cause when she was baking she literally said that her mom was a Baker so she knows how to those stuff and I thought she likes to do it bc of her mother but now she's writing to her nanny about she's baking again to remember those old times they've had as if she was cayena since the beginning when that's not even her body [yes ik she got the memories and stuff too] idk maybe I'm not seeing the whole isakaid thing in the story