Her father Felix was arrested by Soviet authorities and spent several years sentenced to forced labor in the gulag system in Siberia when she was still an infant.

[3] After graduating from secondary school, Lill studied acting under the supervision of course instructor Voldemar Panso at the Tallinn State Conservatory (now, the Estonian Academy of Music and Theatre).

[4] Among her graduating classmates were actors Helle-Reet Helenurm, Ago Roo, Katrin Karisma, Raivo Trass, Enn Klooren, Jaan Tooming, Peeter Jakobi, and Kalju Komissarov.

Prominent roles during her time at the Youth Theatre include those in works by such playwrights and authors as: Shakespeare, A. H. Tammsaare, Henrik Ibsen, N. Richard Nash, Andrus Kivirähk, and Anton Chekhov, among others.

Some of her more memorable roles have been in productions of works by such varied international authors and playwrights as: Shakespeare, Ibsen, Molière, Valentin Rasputin, J. M. Barrie, Edward Bond, Leonid Andreyev, Leo Tolstoy, Eugene O'Neill, Clare Boothe Luce, Isaac Babel, Marsha Norman, Françoise Sagan, Albert Camus, Yukio Mishima, Ray Cooney, Ödön von Horvath, Astrid Lindgren, Frank Marcus, Tankred Dorst, Joseph Kesselring, Terry Pratchett, Wilkie Collins, Juan Rulfo, Antti Tuuri, Arthur Miller, and Yasmina Reza, among many others.

This was followed the next year by the role of Maile in the Tõnis Kask directed television melodrama film Vana mees tahab koju, based on the 1983 novel of the same name by Raimond Kaugver.

[11] In 1977, Lill made her feature film debut in the Kaljo Kiisk directed drama Surma hinda küsi surnutelt for Tallinnfilm.

In 1992, Lill appeared in a small role in the Aare Tilk directed family drama Tule tagasi, Lumumba, based on the Toomas Raudam story Lugu Reinust.