Magnolia Lake by Emily Paige Skeen

Love can turn a tragedy into a triumph…
Cora Stephens has it all – including the perfect boyfriend – until one fateful afternoon when she finds her Prince Charming in the arms of another girl.
Facing heartache and betrayal, Cora turns to long-time friend Landon for comfort. There’s only one problem. Landon’s looking for more than she can give him.
While Cora navigates the turbulent waters of young love, there’s someone who doesn’t want to see her live happily ever after. And he’ll go to unimaginable lengths to get his way.
In the blink of an eye, Cora’s plucked from her ordinary world and thrown into a horrific nightmare. She soon discovers there’s more to life than high school romances, parties, and prom.
Like surviving.