A Cherokee County family was reunited last week after being separated for years because of Daydrianna Hefner’s alleged drug use.

But independent drug tests proved the mother was sober, tests that came after a yearlong Atlanta News First investigation uncovered some of Georgia’s subcontracted labs have a history of false positive drug screens.

“Don’t give up until the miracle happens,” Hefner said, after a Cherokee County juvenile judge closed the child welfare case against her. That allowed Hefner to be reunited with her two daughters who had been in foster care for three years.