Emily Gremillion attended school at the University of Louisiana at Lafayette, graduating summa cum laude with a Bachelor of Science in Criminal Justice in 2004. While at UL Lafayette, she was recognized as the Outstanding Graduate in Criminal Justice. From there, she resumed her education at Southern University Law Center in Baton Rouge, where she also graduated summa cum laude in 2007. During her time at Southern Law, she was a member and officer in the Phi Alpha Delta Legal Fraternity, and clerked at the law firm of Forrester & Dick under Shelly Dick. Shelly has since been appointed to assume a federal judgeship in the Middle District of Louisiana.

After graduating from Southern Law, Emily began work as a judicial law clerk to the Honorable Judges William Bennett and Mark Jeansonne with the 12th Judicial District Court in Avoyelles Parish, Louisiana. Once her clerkship was complete, Emily went on to work as an attorney for Brian Caubaurreaux and Associates in 2007. She practices in the areas of plaintiff personal injury, specializing in automobile and 18-wheeler accidents, workers compensation, intentional torts, wrongful death and survivor actions, Social Security Disability and appeals.

Emily is licensed to practice in all Federal, State and Local courts in Louisiana as well as the United States Fifth Circuit Court of Appeals. In April of 2018, Emily received certification from The Mediation Institute to mediate any civil, commercial or employment matters. Mediation is a structured, interactive process where a neutral third party assists disputing parties in resolving conflict through the use of specialized communication and negotiation techniques.

Emily is heavily involved in various legal groups and associations. She is the past President of the Avoyelles Parish Bar Association, having previously served as its Vice President and Secretary/Treasurer. She is a past member of the Louisiana Association for Justice and the American Bar Association. Emily also volunteers assisting high school students for the Avoyelles Parish Teen Court. In March 2013, the Louisiana Bar Journal chose to feature Emily in the Young Lawyers Spotlight.

Outside of her legal career, Emily enjoys spending time with her son, Eli, and is a member of the Sacred Heart Catholic Church in Moreauville, Louisiana.