[1] Afterwards, she was accepted into the Hochschule für die Wissenschaft des Judentums (College of Judaic Studies) in Berlin, but had her education interrupted by the Nazi rise to power in Germany in 1933.
[1] She received her master's degree in 1940, with her thesis being about “The Concept of Democracy in Tocqueville.”[1] In 1942, Leni married Chaim Hoffman (later Yahil; 1905–1974), later having two sons with him – Amos (born 1943) and Jonathan (1945–1967).
[1] In the late 1960s and 1970s, Yahil worked as a lecturer and professor at various universities in Israel and the United States, teaching about modern Jewish history, the Holocaust and Zionism.
[1] In addition to all of this, she was an "editor of the section on Scandinavian Jewish literature in the Encyclopaedia Judaica, was a member of the editorial board of the Encyclopedia of the Holocaust and the Yad Vashem Studies series, and participated in international conferences in Israel and abroad.
"[1] Unlike some earlier major Holocaust historians (such as Raul Hilberg and Gerald Reitlinger), Yahil used both Jewish and non-Jewish sources for her research, including for her masterpiece work.