Married to the artist José Antonio Fernández-Muro, she lived in Buenos Aires, Paris, New York and Madrid.

The group, made up of artists such as Enio Iommi, Alfredo Hlito, Tomàs Maldonado, Lidy Prati and José Antonio Fernández-Muro, among others, was presented in exhibitions at the Stedelijk Museum in Amsterdam and at the Museum of Modern Art, Rio de Janeiro until it was dissolved in 1954.

Her gestural works combined coloured surfaces, drips, digital and textual signs, graffiti.

[9] Sarah Grilo has exhibited in numerous galleries and institutions in the United States, Latin America, and Europe.

[10][11][12] In 2023 her work was included in the exhibition Action, Gesture, Paint: Women Artists and Global Abstraction 1940-1970 at the Whitechapel Gallery in London.