Throughout her childhood, Whitner lived in various states due to her parent’s careers in the airline and medical industries. Her father served in the U.S. Marines during the Vietnam War which instilled in her a desire to serve our country. Whitner earned her bachelor’s and law degrees from Howard University before serving in the military. She spent 10 years as an attorney for the U.S. Air Force and Air National Guard. After her honorable service with the military, Whitner continued her career as a prosecutor. During that time she litigated cases in the U.S. Virgin Islands and Florida.

Whitner moved to Georgia in 2004 and served the State of Georgia representing clients with the Office of the Public Defender in Savannah, Georgia. She opened her own law firm in Gwinnett in 2009. She also served as a municipal court judge in Snellville and in 2016 became a juvenile court judge for Gwinnett County. On July 15, 2019, she was appointed to the Gwinnett County Superior Court bench by Governor Brian P. Kemp.

She is an active member and volunteer with New Mercies Christian Church, Alpha Kappa Alpha Sorority, Incorporated, Boy Scouts of America, United Way of Greater Atlanta, and a host of other service organizations.