Joining The Royal Harem

After a devastating break up from her long time boyfriend, Niah decided to unwine and take a vacation to her aunt-grandma Lora's rest house. While enjoying her vacation and reminiscing all the good times she had in that rest house, she found her first novel work written in a special blank book that her aunt-grandma gave her, while scanning the book a sudden magical force made her dizzy and as she woke up she found herself inside a completely different world, a world that she had written her first novel. As founding a way to get out she was mistakenly identified as a princess joining the competition for beauty, intelligence and skills to be the leading candidate for queen's crown and bride for the winning crown prince among the 8 Princes of Higher Kingdom leaving her trapped between the competition while preventing the struggles and challenges she had written in every chapter of her own book and saving all the casualities that may have died in it
Is there any way she can prevent those happenings in every chapter she had written in it? or
Will Niah ever found her way back out of the book?