In 2010, at 13 years old, Portales began playing for
Atlético Madrid, where she remained for five years. She then made her debut playing for
Fundación Albacete in 2016. The following season, she played for
Zaragoza CFF, Portales played for
Real Madrid CF for the following two seasons, playing in 49 games and scoring 3 goals. In 2021, Portales signed for the Italian side
Inter Milan. She played in 16 games but didn't score any goals. After a season in
Serie A, Portales decided to return to Spain to play for
Valencia CF, signing a contract to play for two years. As of October 2023, she has played in 33 games and scored 4 goals. ==International career==