From June to December 2018, Campbell was the Chargé d'affaires ad interim at the United States Mission to the Association of Southeast Asian Nations.

[4] She attended Nichols School in Buffalo and was inspired to pursue a career in the Foreign Service after a study abroad program in Japan.

From 2006 to 2009 she was the Deputy Chief of Mission in Phnom Penh, Cambodia, where she spent almost five months as Chargé d'affaires ad interim from August 25, 2008, to January 19, 2009.

From June 2011-June 2012, Campbell served as the senior civilian representative of the U.S. government in southern Iraq, opening Consulate General Basrah on July 5, 2011.

After that she was put in charge of the recruitment and examination of new Foreign Service Officers plus some other internal State Department programs until mid-2018, when she was posted to USASEAN.