Protecting Harry

One night Vernon gets drunk and takes "punishing" Harry a step to far. Petunia can't let it go on. Two months later Harry, Petunia and Dudley are living in a run down apartment in New York and then Harry turns 11. The Wizarding World needs it's hero but what if they can't find him? What if he is lead into it by none other than Petunia Dursley, who is a actually a witch? Snarry. AU