In June, 2009, Walker was accused of killing her aunt and cousin: 85-year-old Lillian Graves and 65-year-old daughter, Agnes Stewart. The pair were found stabbed to death in their Peach County home.
Walker, age 54, allegedly stole her aunt's Jeep Cherokee and went through the women's purses to steal cash, credit cards and prescription drugs.
Prosecutors say they plan to ask for the death penalty against her.
Her lawyers are asking that she be released because her rights were violated. She was indicted in August 2009, and three months later, her attorney filed a request for a speedy trial. State law says that if two full court sessions are completed after that request, the suspect must be released.