[1] Kopp's work as a delegate focused on education and budgets, along with audits, pensions, human services, consumer protection, housing, privacy, and good government.

[1] Over her time as a delegate, Kopp chaired the Joint Committee on Spending Affordability, as well as the Appropriations Subcommittee on Education and Economic Development.

A bipartisan panel recommended in mid-February 2019 that Kopp keep the job, besting two other applicants who each earned single votes.

Kopp said the change in payment, pledged by 2011 legislation, was the wrong choice and would be costly to state workers and taxpayers.

[14] Kopp had not publicly announced beforehand how she intended to vote on Governor Hogan's proposal, though she was described as an "avowed skeptic" of the plan.

[12] On June 5, 2019, Kopp's was the opposing vote in a 2–1 approval of Hogan's plan to solicit private companies to build and operate toll lanes, on I-270 first and then the beltway.