Mrs. Luna took extension courses at WMU. She then took courses from Blackstone College of Law and passed the bar examination for the State of Michigan.
After practicing law in Kalamazoo for 20 years, she was appointed District Court Judge in 1970. While on the bench, she secured the first grant to provide an alcoholism counselor for the court system.
She retired from the District Court in 1975 and served as acting circuit court judge in southwest Michigan for the next several years.