From 1955, she was persecuted for her political ideas during the self-appointed dictatorship of the Revolución Libertadora which ousted in a bloody Coup d'état the democratic elected government of Juan D. Peron (1946-1955).
In 1944, she joined the Francisco Canaro orchestra as a singer, singing a duet with Carlos Roldán, with whom she recorded two songs 1944.
In 1945, she joined the Francisco Lomuto orchestra, performing with Alberto Rivera Pizarro during a successful tour of Europe.
In 1955, the constitutional presidency Juan Perón was overthrown by the self-appointed dictatorship of the Revolución Libertadora Many performers had to stop their profession, including Luna, and others, persecuted and blacklisted for their political beliefs.
In Montevideo, she performed at the Cafe El Ateneo, recorded with the orchestra of Luis Caruso and acted with Alba Solís, who was also persecuted in Argentina.