Promet was born on 16 February 1922 in Petseri to an Estonian painter, Aleksander Promet. After finishing Tallinn 18th Elementary School, she entered the State Industrial Art School in 1935, from which she graduated in Spring 1940. In Autumn she was asked th work at the newspaper Noorte Hääl. After the outbreak of World War II, she and her family were forced to leave their home and evacuated to Tatarstan. In Summer 1943, Promet went to work at Estonian language radio in blocked Leningrad. 1944–1951 she worked as a journalist in Tallinn.