What is the author's style in After Tupac and D Foster by Jacqueline Woodson?

The narration, and particularly the dialogue, is often peppered with examples of African American Vernacular English, sometimes referred to as Ebonics. African American Vernacular English involves nonstandard vocabulary and nonstandard uses of verb tense. For examples of vocabulary, one of the girls might exclaim "Dag, my girls!" or ask, "Where the frick-frack you been?" (p. 143).