Sarah Turney became a viral sensation when she posted suspicions on social media that her dad killed her sister, Alissa. Now Sarah, re-examines her and Alissa's childhood.Sarah Turney became a viral sensation when she posted suspicions on social media that her dad killed her sister, Alissa. Now Sarah, re-examines her and Alissa's childhood.Sarah Turney became a viral sensation when she posted suspicions on social media that her dad killed her sister, Alissa. Now Sarah, re-examines her and Alissa's childhood.