Diana is a long-time resident of Westminster, a former biology instructor, high school principal, district administrator, small business owner and advocate, a member of the Westminster Chamber of Commerce, and a former member of the Westminster City Council.
As a life-long educator, in 2019, Diana was recognized as a California State Woman of Distinction in Education and the Arts. As Vice President, and 'Diamond' sponsor, of the Westminster Rose Center Theater, she proudly supports the HBHS Academy for the Performing Arts, other school arts programs, and the Vietnamese-American Philharmonic Orchestra. She is a sponsor of the Viet Bao 'Writing on America' program that records the histories of Vietnamese immigrants and their journey to the United States. She is a member of the financial oversight committees for the Westminster School District, the Ocean View School District, Coastline Community College District, and the City of Westminster. She is President of the Westmont Neighborhood Watch.