[1] Aguilar won a gold medal with the Spanish national team at the 2005 Mediterranean Games in Almería.

[7] She won silver medals at the 2008 European Championship,[8] where the Spanish team reached the final after defeating Germany in the semifinal,[9] and the 2014 European Championship, where the team was defeated by Norway in the final.

[11] She competed at the 2011 World Women's Handball Championship in Brazil,[12] where the Spanish team placed third.

She was also part of the Spanish team that won bronze at the 2012 Summer Olympics and the 2011 World Championship.

She missed nine months of competition in 2008 due to a knee injury, and fractured a metatarsal bone on her foot at the 2012 European Championships.