On May 29, 1939, she married Menachem Begin, whom she met at the age of 17 at her father's house, who was a donor to the Revisionist party.

Upon arriving in Mandatory Palestine, she was arrested by the British Mandate authorities and imprisoned for several weeks in the Atlit detainee camp.

When Menachem Begin won the premiership in 1977, he invited her to the stage, and in quote from the verse from the book of Jeremiah, he publicly stated before her: " I remember to you the lovingkindness of your youth, the love of your nuptials, your following Me in the desert, in a land not sown."

[5] Some of the people who worked closely with Menachem Begin, including Cabinet Secretary Aryeh Naor and Communications Adviser Dan Patir, said that they had never heard Aliza express in their presence her views in political or diplomatic matters or express disagreement with her husband's policies.

For example, she contributed to the establishment of hostels and schools for people with disabilities and special needs and raised donations for a variety of organizations involved in the field.

The money won from the Nobel Peace Prize, which her husband shared with Egyptian President Anwar Sadat, were all donated to a fund set up to support children and needy students.

Aliza Begin died on November 13, 1982, during her husband's visit to the United States, and was buried on the Mount of Olives near the graves of two of Olei Hagardom, Meir Feinstein and Moshe Barazani.

Aliza and Menachem Begin had two daughters, Hassia and Leah, and a son, Zeev Binyamin, a Knesset member and minister.