In April 2017, Malabuyo competed at the City of Jesolo Trophy, where she finished third in the all-around behind teammates Gabby Perea and Maile O'Keefe. Later that year Malabuyo won the U.S. Classic ahead of O'keefe. At Nationals, Malabuyo finished second behind defending champion O'Keefe, but finished first on floor exercise, second on uneven bars, and third on vault and was named to the national team. She and O'Keefe were then selected to represent the United States at the 2017 International Junior Gymnastics Competition in Japan. There Malabuyo finished second in the all-around, again behind O'Keefe, and first on floor exercise.