Marcela Interiano was born and raised in Houston, Texas. Her parents, Leslie and Armando Interiano, emigrated from El Salvador to Houston following her father's military service in the Salvadoran civil war. She has two younger sisters, Lucia and Nicole. She attended Duchesne Academy of the Sacred Heart, a French, all-girls Catholic School, from first grade to her senior year of high school. She is currently studying Chemical Engineering at Rice University and is interested in pursuing a career in patent law. Prior to law school, she hopes to gain experience in oil and gas or consulting work. In addition to Chemical Engineering classes, Marcela is the Chair of University Court, a student judicial body at Rice, an O-Week Coordinator for her residential college, Lovett, and co-captain of the Lovett Powderpuff team.
- Marcela is trilingual in French, English, and Spanish.