Guerra took up gymnastics at the age of eight. In 2016, she won gold in teams and with hoop at the Pan American Championships.[2][3] As a senior, in 2017, Guerra placed 37th in the all-around at the World Cup in Sofia, Bulgaria.[4]
In 2018, she became a member of the national group. The group competed at the World Championships in Sofia, finishing 18th in the all-around, 18th with 3 balls and 2 ropes, and 21st with 5 hoops.[5] At the 2018 Pan American Championships, she won bronze in the all-around and with 3 balls and 2 ropes as well as gold with 5 hoops.[6][7]
The following year, she won all three gold medals in the all-around and event finals at the South American Championships, and in August she went on to win bronze in the all-around and with 5 hoops and gold with 3 balls and 2 clubs at the Pan American Games.[8] At the World Championships in Baku, the group was 13th in the all-around, 11th with 5 balls and 16th with 3 hoops and 2 clubs.[9]
In 2021, Guerra finished 9th in the all-around, 7th with 5 balls and 11th with 3 hoops and 2 clubs at the World Championships along with her group teammates, Maria Arakaki, Deborah Medrado, Nicole Pircio, Beatriz Silva and Barbara Urquiza.[10]