[5] In 1992, she returned to PNG working in the Papua New Guinea Department of Trade and Industry, later moving in 1994 to the position of Director of Corporate Services in the Investment Promotion Authority.

She served as director on two corporate boards in the PNG financial sector, and worked as a freelance consultant for the two years prior to her diplomatic appointment.

[5][8] [a] In August 2011, Kiap was appointed High Commissioner of Papua New Guinea to the United Kingdom with accreditation to Cyprus, Egypt, Israel, South Africa and Zimbabwe.

[11] She served as chair of the Commonwealth Secretariat Board of Governors from 2016 to 2018, when she was succeeded by Cypriot High Commissioner Euripides Evriviades.

[13] In December 2022, she was nominated as one of three candidates for Governor-General of Papua New Guinea in 2023, alongside incumbent Sir Bob Dadae and Stephen Pokawin.