She is also the current Chairperson of Religions for Peace Philippines Youth Committee, and a Member of the Religions for Peace Asia-Pacific Interfaith Youth Network. Ms. Mallari has been part of the Catholic global community since childhood. She became a youth leader in CFC-Youth for Christ where she helped many young people to enrich their faith by empowering them to do more for their communities. Through this immersion, she gained experience in capacity building and pastoral talk, as well as Coordination, Organising and hosting skills for conferences and community events.

Ms. Mallari graduated with a degree of Bachelor of Science (Psychology) and eventually became a Registered Psychometrician. Currently, she is earning her Doctor of Medicine degree in the University of Santo Tomas in the Philippines. With this background, she heartily campaigns for and supports humanitarian actions geared towards sound physical and mental health. Moreover, she strongly advocates for environmental conservation through participation in relevant community-based projects, and advocacy for eco-friendly solutions. She aims for the integration of sustainable environmental practices in the field of medicine through climate-friendly management and provision of healthcare to protect the earth.