She orchestrated the line of succession. Even though Zulu
tradition stipulated that a man who killed his brother could not
succeed his brother, she lied to ensure that Dingane could succeed
his brother Shaka. This was despite the fact that Dingane had a
direct hand in Shaka's assassination. When Dingane was challenged
by Mhlangana, Mkabayi had Mhlangana killed by henchmen so that
Dingne could succeed. With Dingne on the throne, Mkabayi warned him
that the boers were practising witchcraft against the Zulu. Dingane
believed this and had Piet Retirf assassinated, along with his
followers. This cowardly act led to Dingane's downfall; he was
succeeded by his brother Mpande, it is doubtful that Mkabayi lived
to see Mpande's reign.