Allen was kidnapped when she was 4 years old, in 2002 , by his mother Dara Marie , who was arrested . Dara was separated from the girl’s father , but had no custody of the child , according to researchers, reports NBC News. Officials from the FBI and the Marshals Service also participated in the search . Officials said Sabrina was found in the city of Tlaxcala Courier in southwest Mexico City, thanks to the help of an informant . The two were brought back to America , but the girl has not yet rediscovered his father , Greg Allen , who led the search for her daughter.