When Francis talks to Scout he reveals an unpleasant feature of Aunt Alexandra. What is this?

Francis tells Scout about Alexandra's attitude towards Dill. Scout learns that her aunt looks down on Dill because of his family situation. She compares him to a stray dog. Aunt Alexandra has also, apparently, been saying what they thought was bad things about her brother Atticus. She has told Francis that Atticus is a "nigger-lover." Scout learns about the deep seated racism and even unpleasant attitudes towards her father within her extended family.