WHAT DO i DO WITH A 14 YEAR OLD GIRL, WHO DOES NOT COME IN FROM SCHOOL AND CUT CLES?

SHES MY GRANDDAUGHTER, HAD HER SINCE AGE 3. SHE IS NOW CUTTING CLES AND DOES NOT COME FROM SCHOOL. SHE WAS CAUGHT SHOP LIFTING AT THE PLACE I WORK AT. I NEED HELP, BUT DO NOT KNOW WHERE TO TURN. cAN YOU HELP OR SOME ADVICE.