Credit: St. Mary’s County Sheriff’s Office via Facebook ST. MARY’S COUNTY, Md. – Mattison “Mattie” Graves, at just 22 years old, exudes a remarkable self-assurance that defies her youth. When she obtained her driver’s license at 16, Mattie embarked on a journey into the exhilarating world of diesel drag racing, swiftly establishing herself as a…
