Debra Kay Cantu was arrested on Tuesday.
Police say Cantu, 46, robbed a 7-Eleven in the 1800 block of Gregg a little after 3 AM Tuesday. Cantu reportedly pointed a rifle in the store clerk's face and demanded money -- before taking off to the north.
Police also say Cantu could be tied to some car burglaries in Big Spring.
Now, Cantu is charged with aggravated robbery and two counts of burglary of a vehicle.