What do the ladies do to the mrunas in to kill a mockingbird

The ladies showed compassion for the mrunas which were an african tribe. Mrs. Merriweather talked about the missionary work that J. Grimes is doing. But then you can see that Mrs Merriweather could do more for her neighbors and she is being two faces when she says : that there is nothing more distracting than a sulky darky.

i think the answer is invented words, rhyming knack, alliteration, and, metaphor.