To The TARDIS or To Hogwarts

Despite the title, this is not Fan Fiction. My character simply makes references to any and every book I have ever read or movie I have ever watched. If you had the power to travel anywhere in space and time, where would you go? This question prompted a young girl to write a book composed of her fictitious adventures. This was all fun and games until the real story started, she was transported into the fictional world she created. Forced to survive in the parallel timeline as her alternate self, the journey home is proved to be long, difficult, and nearly impossible.