She was rehabilitated after
Muhammad V Nasir's ascension to the throne in 1906, until he married her in 1908. During his reign, she became the undisputed ruler of the palace as the Bey was interested in her. He issued an official decree affirming her protection, forbidding any harm to come to her, and safeguarding her rights. He also granted her a salary and compiled a list of all her expenses. This power enabled her to establish relationships with people outside the royal palace in Tunisia. During this time, she met
Princess Nazli Fazil, a descendant of the Muhammad Ali dynasty of Egypt and wife of
Khelil Bouhageb, who would become
Prime Minister of the Kingdom of Tunisia. Eager to know more about her, Lella Kmar asked Nasir Bey about the first time he saw her, during the reception she and her husband held to celebrate the arrival of
Muhammad Abduh in Tunisia in 1903. However, the most significant gesture Muhammad V made in honour of Lalla Kmar was the dedication of the Essaada Palace in
La Marsa, which he had built specifically for her between 1914 and 1915 — in the midst of the First World War. Just as Lella Kmar was pivotal in Ali III's decision-making, the same was repeated with Muhammad V. This continued until his death on 8 July 1922, when she was around 60 years old. == Later life (1922–1942) ==