[1] She is the eldest of three children; her brother Pala is a lecturer at Victoria University's Business School.

[2] Trief went to Nelson College for Girls, before graduating from Victoria University of Wellington with a Bachelor of Laws with honours in 2001.

[1] She also served as Secretary of the Law Council and Disciplinary Committee until her appointment to the Court.

[3] Trief was appointed to the Supreme Court by President Tallis Obed Moses in May 2019 and sworn-in in July.

[5] She is the first Ni-Vanuatu woman to be appointed a Judge of the Supreme Court of the Republic of Vanuatu.