One can see at this stage of the novel Kumalo is far from reaching his state of contentment. This is proven by the element of fear that is so prominent in him before he leaves for the city. But there are two things that are important to note here. Kumalo even at this stage does something very heroic. He goes to the city in search of his sister a daunting task considering A) the mental state that he is in and B) the overwhelming fear he has of the city. Kumalo does this because "his own world is slipping away" his world being the tribal unit. He believes that he needs to do restore the tribal unit in order to improve the suffering he sees around him. This act is not unimportant in that it displays Kumalos courage and serves as a stepping stone to him reaching contentment contentment that he very much lacks at this stage.
Once Kumalo reaches Johannesburg his worst fears start coming to life. When he visits his sister he comes to learn that his sister has become a prosititute and a liquor