Gálvez represented Spain at the 2012 Summer Olympics in London, where she competed in the women's trap. Gálvez barely advanced to the final, after scoring a total of 70 targets from the qualifying rounds, and winning a three-person shoot-off against Finland's Satu Mäkelä-Nummela and Russia's Elena Tkach, with a bonus of 12 points. She finished in fifth place, by twelve points behind winner and world-record holder Jessica Rossi of Italy, accumulating a score of 87 targets (17 in the final).