Who is Zenzile from And They Didn't Die and what is their importance?

Zenzile is a childhood friend of Jezile's. Zenzile is married to Mthebe. Mthebe lives and works in Durban, coming home only long enough to get his wife pregnant again. Zenzile suffers through five pregnancies in six years. By the time Zenzile becomes pregnant with her last child, she is so tired and ill that she is unable to sustain the pregnancy or care for her older children. In the end, Zenzile dies of internal bleeding after giving birth to a stillborn daughter.