Caitlin Can't Remember

It sounds like a movie script: for nearly a year and a half since she got a serious knock on the head, Caitlin Little wakes up every morning thinking its October 13th, 2017. Except, in the movies, you can always write your own, happy ending. Caitlin and her family have to find answers in real life and medicine. So why is it so hard to find any answers? And her story cant possibly be real can it?