finding mary, april 15,1985

Why is it so hard to get info on finding a child that was adopted in virginia ?I have contacted social services but they dont return my calls or e- mail. WHY? If anyone could give me some advice it would be appeciated. my daughters name at birth was MARY ELIZABETH CASTLEBERRY, HER DATE OF BIRTH IS APRIL 15,1985. SHE WAS BORN AT PORTSMOUTH GENERAL HOSPITAL IN PORTSMOUTH ,VA. SHE WAS TAKEN INTO DSS CUSTODY AND PLACED IN A FOSTER HOME WITH A LADY NAMED HAZEL CHAPMAN WHO ALSO RESIDED IN PORTSMOUTH , VA. IF ANYONE COULD HELP ME PLEASE I WOULD BE GREATFUL. GOOD LUCK TO ALL WHO ARE SEARCHING FOR ALOVED ONE.