Holly grew up in Rockford, Illinois. She graduated from Palm Beach Atlantic University in 2008 with a B.A. in Pre-Law. She graduated from Southern Illinois University School of Law in 2011 and shortly thereafter began working as a staff attorney for the Fifth District Appellate Court in Mount Vernon, Illinois. In 2015, she began a term clerkship with a United States District Judge in the Southern District of Illinois.
In 2016, she entered private practice at the end of her clerkship term by joining a firm in Marion, Illinois, focusing in Elder Law. Holly joined Martensen, Niemann & Sorensen in October 2017. Holly became partner of Martensen, Niemann & Sorensen in January, 2022, and became a named member of the firm in January 2023. Holly is a member of the Illinois State Bar Association. Holly resides in Paxton, Illinois with her family.