How does Devola remind Mary Call of Cosby Luther in this chapter, and how does she respond to it?

Devola seems changed and looks at how Cosby Luther looked in times of crisis. Devola tells her to take off her coat and sit down. Mary Call obeys her, just as she would her mother. They tell Mary Call that Kiser has paid for the land and the house and put it in Devola's name, since Mary Call is a minor. Devola then tells her that she and Kiser are getting married, and that Mary Call should not look so tough, it is ugly.