Gabriell was born in Louisville, Kentucky to an American mother and a Filipino immigrant father. She attended college at Brigham Young University–Hawaii and there obtained a Bachelor of Arts in International Cultural Studies with a primary emphasis in Intercultural peacebuilding, a secondary emphasis in communications, and a minor in music. During her undergraduate years, she took a break to serve for a year and a half as as missionary for The Church of Jesus Christ of Latter-day Saints in Chiclayo, Perú. After graduating, she went to work at the Justice Court in Sandy, Utah. She is currently pursuing a juris doctorate degree from Brigham Young University’s J. Reuben Clark School of Law. Last year, she did an externship with the Church’s Office of General Counsel over the Caribbean Area. She currently works as a research assistant for the International Center for Law and Religion Studies.