[9] In 1929, Álvarez teamed up with the Dutch player Kea Bouman to win the women's doubles title at the French Championships.

In 1927, Álvarez authored a book in English published in London under the title Modern Lawn Tennis.

[10] That year, Álvarez began reporting on the political events in Spain for the British newspaper the Daily Mail.

She returned home to Spain in 1941 where she continued to be active in sports and began writing on religious and feminist topics, publishing her book Plenitud (Fullness) in 1946.

She was disappointed that Sergi Bruguera didn't take part in Wimbledon after winning Roland Garros and showed enthusiasm for Conchita Martínez's Wimbledon semifinals run, noting that while she had previously shown talent it was the first time she had shown a champion's disposition.