Diedra was born in Longs, South Carolina on September 8, 1975. She graduated from the University of South Carolina (B.A. 1997) and the University of South Carolina Law School (J.D. 2003) where she served on the Thurgood Marshall Mock Trial Team.
She was admitted to the South Carolina Bar in 2003. She is a member of the Charleston County, South Carolina, and American Bar Associations. Her areas of practice include civil and commercial litigation, insurance law, product liability, medical malpractice defense, health care law, and employment law.