The following year, she won the gold medal in the South American Championship in Argentina in the 4 × 200 m Freestyle event and the bronze in the 200m Butterfly.

In the pre-Olympic championship that defined the Brazilian team for the Rio 2016 Games, Nathalia came close to getting a place in the Olympics that year in the 200m medley.

[4] She competed in the 2020 Summer Olympics, where she finished 10th in the Women's 4 × 200 metre freestyle relay, along with Larissa Oliveira, Aline Rodrigues and Gabrielle Roncatto.

;[10] At the 2022 South American Games held in Asunción, Paraguay, she won a silver medal in the Women's 200 metre individual medley[11] and a bronze medal in the Women's 400 metre individual medley.

[12] At the 2023 Pan American Games held in Santiago, Chile, she won a gold medal in the Brazil's 4 × 100 m mixed freestyle relay, for swimming in the qualifying round of the event, and a silver medal in the Women's 4 × 200 m freestyle, where Brazil almost equaled the South American record.