The Choice

Ariadne is having an odd 18th birthday.
First the bus accident that should have killed her reversed itself and she was the only one who noticed.
Then she tried to save someone's life, only to have time reverse again so that person was never in danger.
And to top it off, she receives a letter from her mother, but her mother swears she didn't write it.
Unfortunately for Ariadne, the mystery is only just beginning...