What is the relationship of Mwikali to her great grandmother in the story?

Mwikali being Mutanu's granddaughter indicates a direct familial link that spans generations. This relationship implies that Mutanu is the mother of Mwikali's parent, placing Mwikali in the role of a descendant. The concept of a granddaughter underscores the lineage and connection that exists within families, as well as the passage of heritage and traditions from one generation to the next. This generational bond shows Mwikali's place in the family structure as part of a continuum while also highlighting potential themes of family, legacy, and identity that may be explored throughout the story.

In the context of the other options, the relationships would not align correctly with the established family tree. For instance, a niece would not provide the same generational distance as a granddaughter, and siblings or cousins would suggest a different type of relationship that does not fit the established familial hierarchy.