[1] Riggs worked in private practice with Sanders, Bruin, Coll, & Worley in Roswell, New Mexico, and served the State of New Mexico as a senior trial prosecutor, children's court attorney, and Assistant District Attorney.

[1] She was appointed a judge of the Fifth Judicial District Court of New Mexico by Governor Susana Martinez on August 8, 2014.

On May 13, 2019, her nomination was sent to the Senate to the seat vacated by Judge Christina Armijo, who assumed senior status on February 7, 2018.

[7] On December 18, 2019, the United States Senate invoked cloture on her nomination by a 92–1 vote.

[9] She received her judicial commission on December 31, 2019[10] and was sworn in by Senior Judge Bobby Baldock later that day.