A Lucky Charm (Niall Horan Fanfic)

Andrea, 17, has never really been bothered about meeting her step-brother whom she hasn't seen for years, until she graduates and decided what she wants to do with her life.
As she sets up her life in the states- she gets in contact with Niall and meets him for the second time.
They don't exactly get along... but with time and effort could this duo become besties? Or will Andrea throw a fit, or in worst cases, leave like Niall did when they were younger, with his mum.
When Andreas plans go wrong, and she messes up her future, she finds out who will be there to fix it, and that person could just be one of the boys..