What is the author's style in The Dollmaker by Harriette Simpson Arnow?

There is a powerful use of the literary device of contrast in this book. The narrative is written in prose that is at times raw and direct, and at times extremely poetic,but is always evocative and, on a technical level, almost always grammatical. This is contrasted with the dialogue written for Gertie, her family, other folks from Kentucky, and other perhaps less educated characters like the Meanwells and Dalys. Their dialogue is written with careful attention to how the characters' words actually sound - lots of contractions, dropped g's on words ending in -ing like "baking" or "seeing," and incomplete sentences.