a badass girl named Spirit

A girl comes home and finds her parents dead with their throats cut. She's then sent from foster home to foster home, she's had some bad experiences in them,and all of it lead her to become a street fighter so she can protect herself, and that eventually leads her to street racing, but it all leads her to her last foster parents, they adore her and know what she's been through and adopt her. They live in Winchester Colorado, and she is a loner in her school, until the new guy James Jameson comes to her school, and he turns her world upside down. She then starts getting threats and pictures of her parents murder. Is she still safe in Winchester? Is the killer of her parents someone close to her or an old friend of the family she once had?
READ AND FIND OUT.