Do you know the name of this fantasy/ya book?

I only read the beginning. A girl goes to visit her dad in a different state for the summer. I think it is in Washington. They go to her dad's friend's house for dinner and her childhood friend is there but he has changed. He has no interest in talking to her. All four of them are going on a camping trip... show more I only read the beginning. A girl goes to visit her dad in a different state for the summer. I think it is in Washington. They go to her dad's friend's house for dinner and her childhood friend is there but he has changed. He has no interest in talking to her. All four of them are going on a camping trip together but she has to go with her dad's friend and his son and her dad will meet them later. I think the son had a motorcycle and the father drives a jeep. While they are in the forest the girl learns a secret about the boy. I can't remember what exactly it is but he has some kind of power.
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