She was a law clerk for Justice Frank Holt of the Supreme Court of Arkansas from 1963 to 1965.
She was an assistant state attorney general of the State of Arkansas in 1967, and was then a law clerk for Judge Gordon E. Young of the United States District Court of the Eastern District of Arkansas from 1967 to 1969, and a senior law clerk for Judge Paul X. Williams of the United States District Court of the Western District of Arkansas from 1970 to 1975.
On December 1, 1990, Roy was reassigned to sit on only the Eastern District of Arkansas, and served in that capacity until her death, in Little Rock on January 23, 2007.
[1] She was the daughter of Thomas Clark Trimble III and Elsie Jane Walls.
She married lawyer James Morrison Roy on November 23, 1944, they divorced in 1967, they had one son.