Kosach-Borysova was born in Kolodiazhne, the daughter of Petro Antonovych Kosach and writer Olena Pchilka.

Writers Lesya Ukrainka and Olha Kosach-Kryvyniuk were her older sisters, and Mykhailo Drahomanov was their uncle.

[1] She was one of the first women admitted to Kyiv Polytechnic Institute, and graduated from the school's agronomy program in 1911.

She was convicted of "counter-revolutionary agitation" in 1937, and spent two years in a labor camp, and at Lukianivska Prison in Kyiv.

[2] In 1989, she was posthumously "rehabilitated" by the Supreme Soviet, and soon after her daughter transferred her papers to a Ukrainian archive.