Linda Shannon told investigators that her 32-year-old daughter called her a terrible mother and that's when she snapped.
Her daughter was found stabbed to death on February 22 in their home on South Dougherty Drive on the Army base.
A complaint said the soldier's naked body was found on a bedroom floor with multiple apparent knife wounds and a large knife protruding from her neck.
Autumn Shannon was an active duty soldier and cook at Fort Bragg. The mother and daughter had been living together on post since a December car crash involving the daughter in South Carolina.
Linda Shannon will be sentenced in December.