What is the author's style in The Grass Dancer by Susan Power?

For the most part, the language of the novel is standard modern American English. However, many Dakota words are used as well. This gives the reader a feeling of the importance of the language and culture on the characters in the novel. Even the most modern of the teenagers occasionally uses a Dakota word for "grandfather" or "sacred clown." The author uses these words as a way of communicating that the traditional culture of the Sioux still influences the modern inhabitants of the reservation.