Vicious creatures : a novel of suspense / Ashton Noone.

Enhanced descriptions from Syndetics:

Ava Montgomery never wanted to return home. She fled Reachwood fourteen years ago after the discovery of Adam Albright's body in the forest shattered her young life. But when a violent divorce sends her running back to her parents' house with her troubled daughter Marjorie in tow, Ava discovers that not much has changed in the small Oregon town where she grew up.

It doesn't take long for Ava to fall back in with her old crowd, most of whom stayed in town after high school. Each one of her childhood friends found fame and fortune after they graduated, including Victoria Gallagher--Ava's high school best friend and ex-lover, now unhappily married to a wealthy husband from one of the founding families of Reachwood.

Meanwhile, Ava's daughter becomes intrigued by the forest, fascinated by an urban legend about its secret power--and her curious questions bring Ava's long-repressed memories of the traumatic events surrounding Adam's death back to the fore. And then, when the body of a missing child is found in those same woods, that dark past begins to repeat itself.

After a knife is left on Ava's doorstep and a threatening message appears on her front door, she wonders if her friends have something to do with the newest crime. They never told anyone how much they really know about what happened to Adam on the night he died; does one of them want to drive her out of Reachwood to keep that secret? As Marjorie becomes obsessed with the infamous murder, and old friendships and feuds reignite, Ava is drawn back into the forest to confront her own role in its violent history--before her daughter becomes its next prey.