What is the main conflict in Deadly Little Secret by Laurie Faria Stolarz?

The novel "Deadly Little Secrets" is part of Laurie Faria Stolarz's Touch Series of books, which focus around Camelia Hammond. Camelia Hammond is an ordinary and pretty sixteen year-old girl who attends Freetown High School. She is best friends with Kimmie and Wes. Three months before the book "Deadly Little Secrets" begins, a mysterious boy saves Camelia from being hit by a car.