cousins and Tasimyah Whitehead were 16 when they stabbed their mother , Jarmecca , twice , so violently that they severed her spinal cord . The cousins turned on their heads after getting into an argument on January 13 , 2010 , at their home in Conyers , Georgia before school . They dragged her injured sister to the bathtub and watched her die , before leaving her submerged and returning to school .
Jasmiyah and Tasimyah Whitehead were 16 when they stabbed their mother , Jarmecca , 34 , so violently that they severed her spinal cord . The twins turned on their mother after getting into an argument on January 13 , 2010 , at their home in Conyers , Georgia before school . They dragged her injured body to the bathtub and watched her die , before leaving her submerged and going to school .