SAN DIEGO (CNS) - Arraignment was scheduled Wednesday for the great-niece of a 74-year-old Tierrasanta woman found shot to death in her home a week ago.

Tiffany Nicole Burney, 23, was expected to face murder charges in the death of Daisy Mae Hayes.

Hayes was found dead the night of Dec. 14 in the living room of her Gabacho Drive home after relatives were unable to reach her and went to the residence to check on her welfare.

Police said Hayes' home showed no signs of forced entry or a life-and-death struggle.

Family friends said Hayes had taken her 78-year-old husband, who was recovering from back surgery, to the doctor earlier in the day. He was then admitted to a hospital.

Burney, the granddaughter of the victim's sister, was arrested Saturday in La Mesa.

According to court records, Burney was the subject of two mental health cases filed last year and also filed a lawsuit against the county mental health agency in August 2010.