Her short stories and novellas, compiled posthumously in the collection In Fifteen Minutes You Can Say a Lot: Selected Fiction, are considered an important contribution to the existentialist period in New Zealand's literary canon.
[1][2] After her father, William Arthur Foster, took his own life in 1919 amid a legal scandal, Margaret dropped out of school and moved to London to join the art world in Hampstead.
[3][7][8] Her frequent travels brought her into contact with a variety of interesting men, and she was married three times: to a Brit, a Spaniard, and a German.
[7] In Buenos Aires, 1929, Greville Foster married her second husband, Manuel Maria Texidor i Catasus—referred to by biographers as "the Spaniard"—and they had a daughter, Cristina.
[1][7] She became deeply involved in Auckland's literary scene at the time, receiving mentorship from the writer Frank Sargeson, who would go on to include her in his 1945 anthology Speaking for Ourselves.
[1] Her relationships with members of the scene weren't always collaborative, however, and on one occasion she held a knife to the throat of the poet and publisher Denis Glover.
These Dark Glasses deals with a communist writer who had been helping the Republicans in Spain, as she grows disillusioned with the intellectual scene of Southern France.
"[16] In addition to her own writing, Texidor translated Spanish literature into English, including poems by Federico García Lorca.