After a break, Petecio made a comeback by winning a gold at the 2019 Thailand Open International Boxing Championship. At the 2019 AIBA Women's World Boxing Championships in Ulan-Ude, Petecio won gold in the featherweight division after defeating hometown bet Liudmila Vorontsova in the final. She ended the year with another gold medal, this time at the 2019 Southeast Asian Games. It was a sweet victory for Petecio after failing to bring home the top prize in the biennial meet in her three previous attempts.