Knorr primarily focused her anger and abuse on Terry 's older sisters , Suesan and Sheila .
In one instance , she held a pistol to her youngest daughter Terry 's head and threatened to kill her .
Terry primarily focused Terry 's anger and abuse Terry Terry 's older sisters , Suesan and Sheila .
In one instance , she held a pistol to her youngest daughter Terry 's head and threatened to kill her .