In Chapter 9 of To Kill a Mockingbird, what unpleasant trait about Aunt Alexandra does Francis reveal to Scout?

Aunt Alexandra seems to be a woman who talks behind the backs of other people. Francis, Alexandra's son, tells Scout that his mother said,

"Atticus 'let’s you all run wild' and 'now he’s turned into a
nigger-lover. . . .'.

This paints a new picture of Alexandra, who has been trying to seem like see supports her brother. Francis' comments make Atticus seem like a bad father and makes Alexandra seem like a racist. Scout reacts by fighting with Francis.  Uncle Jack spanks Scout for fighting. But the real cause of the fight is Alexandra's loose tongue in front of her son and her true attitudes about Atticus' actions.