Mimi Mariani married actor Turino Junaidy in 1955. They had three children: Prihartini Suharto, Sri Agustina Suharto, and Anto Santoso. She later married Yusman Effendi and had a child, Raymond Roda. After her last marriage she changed her name to Sumiarto Suharto. In 1969 she was diagnosed with lymphoma and underwent two surgeries. The cancer spread to her spleen, preventing a third operation. After five months of bed rest, she slipped into a coma and died at her home in Kebon Kelapa, Gambir, Central Jakarta on May 1, 1971, a month before her 43rd birthday. Her funeral at Karet Bivak Cemetery was attended by film figures Fifi Young, Sofia W.D., W.D. Mochtar, S. Poniman, Aminah Banowati, and Wolly Sutinah.