At the United States Attorney's Office, Nancy prosecuted a broad range of offenses including violent crimes (such as murder-for-hire, threats-to-kill, arson and kidnapping), large-scale drug trafficking, child exploitation, international contraband and human smuggling, fraud, computer crimes, and immigration. Her work on a landmark federal case earned her a nomination for a United States Attorney General’s Award for Excellence in Prosecution.

As a federal prosecutor, Nancy received over a dozen commendations, certificates of appreciation and other service awards relative to her outstanding performance as a prosecutor, including one from the Federal Bureau of Investigation (FBI) which acknowledged that her actions “were in the highest traditions of the Department of Justice,” and one from the Bureau of Alcohol, Tobacco and Firearms (ATF) which recognized her ”dedication and professionalism to the undercover investigation.”

For six years, Nancy was assigned to coordinate all prosecutions under the Violence Against Women Act. This included lecturing to law enforcement and to local, state and federal prosecuting agencies about guns and violence. She also led theSexual Assault Felony Enforcement (SAFE) Team, which prosecutes all federal child exploitation crimes.

After September 11, 2001, she began working on the Terrorist First-Response Task Force (the team responsible for responding to all domestic and international terrorist threats). After the 9/11 attacks, she worked the night shift hours as the Chief Information Officer (CIO) – liaising with all local, state and national law enforcement agencies – at the Central District of California Command Center.