 Wambui had suffered heart failure previously and was relying on a pacemaker, an electronic gadget implanted to function as the heart does.Wambui Otieno died on August 30, 2011 in a Nairobi hospital.Before her death, Wambui distributed most of her assets including properties to her children and grandchildren and appointed her two daughters, Gladwell Otieno and Rosalyn Otieno, as her personal representatives in her will to administer what was left.