Am I My Sister's Keeper?

Diana Taylor Conner was raised in the church, came from a good middle class family. Since the death of her father, she's lost her faith. Her mother's answer is to come back to church. 

Diana only mocks her mother, "I am too young to be warming church pews. I am not ready to join the Sanctified Stepford Wives Club." 

She marries her childhood sweetheart, an agnostic. Life is going pretty good. Until she gets chummy with Viv, the new neighbour, who introduces her to a world that spins completely out of control; experiencing drugs, rape, deceit and betrayal. 

In the midst of all the insanity, she hears her mother's voice, "Be careful when you play with the devil. You better be prepared to pay the price!" 

Will Diana surrender to thus says the Lord? Are will she be forever lost?