Sociopath and Me

When Angelica Finley is a child, her parents know something is wrong with their little girl. Diagnosed as chronically obsessive with signs of sociopathic tendencies, Angelica constantly commands her parents' attention. Unfortunately, this leaves her younger sister, Rebecca, feeling unwanted-and unloved.
Rebecca learns early in life that her survival depends on keeping her distance from the family. Through constant prayer and meditation, Rebecca is able to escape the trying circumstances of her youth, even pretending that she is loved by her parents and sister.
As they grow up, Angelica shows no interest in loving her sister. She hates Rebecca above all else and intends to get rid of her, one way or another. Even after she leaves home and attends college, Angelica doesn't want Rebecca to replace her as Queen Bee of the Finley household. Living a normal life with her sister's bullying is nearly impossible for Rebecca, but she tries.
Then the unthinkable happens: Angelica threatens Rebecca's children. Suddenly, the gloves are off, and only one sister will come out the winner.