Watch Your Back — Tracy Bilen

When sixteen-year-old Kate hears the boom that ends her parents' life, she doesn t even realize it has anything to do with her. Until the police arrive at her front door.
Sent to live with her aunt at a ski school in Vermont, Kate tries to adapt to her new life. But then Kate's aunt is hit by a speeding car and a rogue FBI agent tries to force Kate into his car at gunpoint. She's saved by Ryan, the risk-taking skier she's only just met.
On the run, the two must unravel the truth about her parents' murder in order to stop a terrorist plot and save their own lives."