Heather was born and raised in Rapid City, South Dakota. She received her undergraduate degree in English from Black Hills State University, Spearfish, South Dakota, in 2003. Shortly thereafter, she met and married Albuquerque native Thomas Munro. In 2006, the couple and their growing family moved to Albuquerque and made it their permanent home.
Heather graduated cum laude from the University of New Mexico School of Law in 2011. As a law student, she was awarded the Clinical Legal Education Association award for Outstanding Clinical Performance for her work with juvenile and disabled clients. She was also awarded top honors in Clinical Law and Employment Law, and was a manuscript editor for the New Mexico Law Review. She began her career as an attorney practicing primarily in the areas of commercial litigation and employment defense. Heather joined the Parnall Law Offices in 2013, to champion the cause of injured plaintiffs.