[5][6] When her father was elected as the president of Chile on 4 September 1970, Beatriz became his closest advisor and collaborator, networking with elements of the Chilean and international Left.

[9] During Pinochet's coup, Beatriz stayed with her father in La Moneda Presidential Palace, leaving only when President Allende ordered all women and children to evacuate.

[6] While in exile, Beatriz served as executive secretary of an anti-imperialist solidarity committee: the Comité Chileno de Solidaridad Antiimperialista, in La Habana.

[5] In one of her last remembered conversations from that year, she spoke of "wanting to escape her role as 'Allende's daughter' — not because she didn't love and admire him, but because his status on the Left and in Cuba prohibited her from living a 'normal' life, out of the spotlight.

Moreover, the prior year's car bombing of Orlando Letelier in Washington, D.C. had been "a devastating blow to the resistance against Pinochet and a personal loss for Beatriz.