Killing Daddy (2014)

Callie Ross witnessed her mother's suicide as a small child. This tragedy, along with bipolar disorder, has warped her world view. She is convinced her father was to blame for her mother's death, and for favoring her older half-sister Laura. Rebelling against her father's plans for her, she walked out on her family, and stayed gone for a few years. But now, dwindling finances have forced Callie to call home for help. Emma Granger, their long time housekeeper, and family friend, informs Callie her father has had a debilitating stroke. Callie sees this as the perfect opportunity for revenge. She returns home, and begins tormenting her lucid, but motionless father, with her evil machinations. Callie puts her twisted plans into motion, but will her fragile mental state derail all her carefully laid plans?