Chapter 1- Running

Willow Blackburn has always dreamt of an interesting life. The plan has been: Meet someone amazing, travel the world. It hasn't happened yet.
When she gets into trouble, she runs into a man who changes her life forever- The Doctor.
Travelling with him is the best thing she's done in her life.
But Willow has a secret. One that she doesn't even know about yet. Without knowing what it is, she could change the universe. Can her and the Doctor find out- before it's too late?