[4][5] She edited the club's official magazine, La mujer moderna, "the most political radical of the journals of its time".

[7] Lamar, an "energetic" "born leader",[2][8] campaigned for immigration reform to abolish sex trafficking, drug abuse, and prostitution in Cuba.

[9][10] She also joined Cuban feminists who sought equal rights for children born to single mothers.

[17] In 1933, she participated in peace talks in Havana, facilitated by American diplomat Sumner Welles.

[20] She and other feminist leaders met with the next president, Carlos Manuel de Céspedes,[17] and Cuban women's right to vote was recognized in 1934.