Henrietta is a Research Fellow (Pacific Security, Geopolitics, Regionalism) in the Department of Pacific Affairs at the ANU. Her research focus is Pacific regional security and the security-migration nexus, particularly transnational crime, criminal deportations, border security, citizenship, and security cooperation.

Henrietta holds a PhD from the ANU examining the securitisation of criminal deportation to the Pacific Islands, particularly Tonga, Samoa and Cook Islands. Her thesis won the IASOC award for Best PhD Thesis/Dissertation in 2024. During her studies, she was a 2021-22 Fulbright scholar visiting the University of Hawai’i, UCLA, and Lewis and Clark Law School (Oregon); and was named a La Trobe Indo-Pacific Emerging Leader.

Henrietta is a co-investigator on two Department of Defence Strategic Policy Grant projects: 'Pacific maritime security coordination: partnerships, priorities, and possibilities' (2024-2026) and ‘Statecraftiness: mapping competition, cooperation, and coercion in the Pacific Islands' (2022-2024); and was previously the Research Associate on another: ‘Mapping Security Cooperation in the Pacific Islands’ (2020-2023).

She is the co-editor of the volume 'Power and influence in the Pacific Islands: Understanding statecraftiness' (2024) with Joanne Wallis, Alan Tidwell and Michael Rose.