Sibonga was elected to the post the following March, 1979, for a full four year term. She served for a total of 12 years.
Sibonga -- who became the first Filipina American lawyer admitted to the Washington State Bar in 1973 -- ran unsuccessfully for Mayor in 1989. She then failed to win the city council presidency. Still, her mayoral campaign brought many Asian Americans together to rally for her cause.
When her political career ended, Sibonga returned to her law practice. She also began writing for a Filipino American community newspaper. In recent years, she has served on several public commissions, including the Horse Racing Commission (for a two-year term ending in January 2000) and the Human Rights Commission (for a five-year term beginning in June 2000).