Kidani earned her Associate of Arts as a legal secretary from Honolulu Business College, her Associate of Arts in liberal arts from Leeward Community College, and her Bachelor of Science from Kennedy-Western University (later Warren National University).
Kidani served consecutively from 2009 until 2013 in the District 17 seat. 2008 Kidani challenged incumbent Senator Ron Menor in the three-way September 20, 2008 Democratic Primary, winning with 3,890 votes (412%), and was unopposed for the November 4, 2008 General election.
2012 Redistricted to District 18, and with Democratic Senator Clarence K. Nishihara redistricted to District 17, Kidani won the August 11, 2012 Democratic Primary with 7,434 votes (603%) against former Representative Michael Magaoay, and won the November 6, 2012 General election with 14,518 votes (673%) against Republican nominee Rojo Herrera.
