She was born in Charlotte, North Carolina. Professor DeAdder received her Bachelor of Arts in Communication Studies with a minor in Spanish from the University of North Carolina at Chapel Hill in 2002. She then moved to Alexandria, Virginia and worked as a paralegal in Washington, D.C. until 2005 when she returned to North Carolina to attend law school. Professor DeAdder graduated cum laude from NCCU School of Law in 2008. While in law school, she was on the Moot Court Board, served as 2L Class Secretary, and was the Criminal Law tutor for Professor Fred Williams as a 2L and 3L.