Who is Bheki from Age of Iron and what is their importance?

Bheki is Florence's fifteen-year-old son. Mrs. Curren has known Bheki all of his life, and she feels a great deal of affection for him. Florence brings Bheki to stay with her while she lives at Mrs. Curren's house because the schools in the township have been burned down. She believes that her son will get into trouble without her supervision.