Dos Santos was selected by the Brazilian Olympic Committee to compete for the host nation's archery squad at the 2016 Summer Olympics in Rio de Janeiro, shooting in both individual and team recurve tournaments. First, dos Santos discharged 637 points, 17 perfect tens, and 7 bull's eyes to lead the home team for the twenty-sixth seed heading to the knockout draw from the classification round, along with the trio's cumulative score of 1,845. Sitting at eleventh in the team recurve, dos Santos and her compatriots Sarah Nikitin and Marina Canetta put up a gallant fight amid the loud applause of their parochial crowd, but bowed out of the opening round match to the Italians in straight sets 0–6. While her teammates fell out early in the elimination rounds of the women's individual recurve, dos Santos successfully reached the pre-quarterfinal match by dispatching Japan's Saori Nagamine (7–3) and Australia's Alice Ingley (6–0), before she faced a 2–6 defeat from Great Britain's experienced Olympian Naomi Folkard.