[1][2][3] At the age of 12, Sigar moved to the Netherlands to continue her education at the Christelijk Hogere Burgerschool in Utrecht.
[1][2] Sigar met with Sumitro Djojohadikusumo, an economist, during a meeting organized by the Indonesia Christen Jongeren (lit.
[2][3] After she had returned to Indonesia, Sigar became a homemaker and focused on her family, supporting her husband's career as an economist and political figure.
When Sumitro served in the cabinet, Sigar became the backbone of the family, especially when her husband became a fugitive due to alleged political and economic cases.
[2][3][4] They faced serious political challenges in the post-independence Indonesia, and their marriage lasted until Sumitro's death on 9 March 2001.