Diala received her Bachelor of Arts degree from the University of Mississippi in 2001 and her juris doctorate from the University of Mississippi School of Law in 2004. While in law school, Diala was the recipient of the Law Alumni Jerry H. Center Scholarship. She served as a teaching assistant in Contracts II, Criminal Law and Civil Procedure. She also served as Editor of the law school yearbook (2004). In 2007, she received her LL.M. in Taxation from the University of Alabama School of Law.