She was reported missing by her school in Aberdeen, North Dakota at 11:30 a.m. Authorities believe that Demetria may have been taken by her noncustodial mother, Candida Greger and her grandmother Kathleen Honomichi.
Both Gregor and Honomichl have warrants for their arrest in South Dakota.
Demetria is Native American, 110 pounds with short, straight brown hair and brown eyes. She was seen wearing black and white shirt with a purple sweater and blue skinny jeans and carrying a black backpack with red hearts and a pink lunch box with a black water bottle.
She may be in a white Ford Taurus with South Dakota license plate 17BG99.
If you have any information on the whereabouts of Demetria, Gregor or Honomichl, please call 911 or 605-626-7911.