[6] In seven years with Rayo Vallecano, she contributed to the club's first Spanish league trophy—scoring 22 goals throughout the 2008–09 season, ranking third at the top scorers table.

[8] In 2012–13 Barcelona retained their title and Sonia scored 21 times to finish joint-top scorer with Rayo's Natalia Pablos.

[11] A member of the senior Spanish national team,[12] she scored against England and Northern Ireland at the UEFA Women's Euro 2009 qualifying.

In Spain's first game of the UEFA Women's Euro 2013 qualifying campaign, Sonia was named to the squad and listed as an FC Barcelona player.

[13] In June 2013, national team coach Ignacio Quereda named Sonia in his squad for the UEFA Women's Euro 2013 finals in Sweden.