[4] Heron started the 2018 season competing at the Pacific Rim Championships where she finished 16th in the all-around and fourth on vault.

[7] In October, Heron competed at the Junior South American Championships, where she placed fourth in the all-around.

During event finals, she placed second on vault and balance beam, fourth on uneven bars, and fifth on floor exercise.

[9] Heron was selected to compete at the inaugural Junior World Championships alongside Karla Navas.

During event finals, she placed first on vault, third on uneven bars, fourth on balance beam, and eighth on floor exercise.

[15] She next competed at the Pan American Championships where she helped Panama finish tenth as a team during qualifications.

[17] Heron competed at the Cairo World Cup where she won bronze on vault behind Joscelyn Roberson and Asia D'Amato.

[20] Then at the Central American & Caribbean Games, she helped Panama win the silver medal behind Mexico.

[23] Heron won the all-around bronze medal at the South American Championships behind Brazilians Gabriela Barbosa and Josiany Calixto.

During the qualification round, she performed a new element in her floor exercise, a double back tucked salto with one and a half twists, which was named after her.