Conversation so far:
Was Mwai Kibaki married?
In 1961, Mwai Kibaki married Lucy Muthoni, the daughter of a church minister, who was then a secondary school head teacher.
Did Mwai Kibaki remarry?
In 2004, the media reported that Mwai Kibaki has a second spouse, whom he allegedly married under customary law, Mary Wambui, and a daughter, Wangui Mwai.
Did Mwai Kibaki have any children?
Mwai Kibaki had four children with Lucy Muthoni: Judy Wanjiku, Jimmy Kibaki, David Kagai, and Tony Githinji.
Did Mwai Kibaki have children with anyone else besides Lucy Muthoni?
No, all of Mwai Kibaki's kids were from Lucy Muthoni
Are there any other interesting aspects about the Mwai Kibaki article?
Mwai Kibaki served as an opposition Member of Parliament from 1992 to 2002. He unsuccessfully vied for the presidency in 1992 and 1997.

Question: What kind of power did she have?
Self-contained rewrite: What kind of power did Mary Wambui have?