From November 1957 to 1968, she was first a junior researcher, and then a senior researcher at the Department of Theory of Literature and
Shevchenko Studies of the Institute of Literature named after T. Shevchenko at the
Academy of Sciences of the Ukrainian SSR. Kotsiubynska studied the language of artistic works, the poetics of Taras Shevchenko, the artistic individuality of Mykhailo Kotsyubynskyi, the specifics of figurative thinking, and its evolution in Ukrainian literature. In 1989, the perestroika
Union of Writers of Ukraine elected Kotsiubynska as a member. Since 1992, Kotsiubynska was a senior researcher at the Department of Manuscript Funds and Textology of the Institute of Literature named after Taras Shevchenko, National Academy of Sciences of Ukraine. She was the head of the editorial board of the academic collection of works by
Vasyl Stus in 6 volumes (1994–1997). Kotsiubynska also worked as a compiler and commentator on a collection of works by
Viacheslav Chornovil in 10 volumes (published since 2002). Kotsiubynska is the author of articles, essays, memoirs, and critical memoirs about Vasyl Stus,
Ivan Svitlychny, Zenovia Genyk-Berezovska,
Pavlo Tychyna,
Yevhen Sverstyuk,
Borys Antonenko-Davydovych and others. In 2008, she became an honorary doctor of the National University of
Kyiv-Mohyla Academy. Kotsiubynska died in Kyiv on 7 January 2011, aged 79. She was buried at
Baikove cemetery (plot No. 33). == The Sixtiers movement ==