In To Kill a Mockingbird, what does Aunt Alexandra say to Jem about the case to make him feel better?Specifically, who does she talk about?

I'm not sure that Aunt Alexandra ever made any statement
in To Kill a Mockingbird that made Jem feel better. Alexandra was
not particularly welcomed into the household by Jem and Scout when she came to stay with
the family during the Tom Robinson trial. Immediately after the trial, Alexandra was
waiting up for Atticus and the children to return. In a rare moment of compassion, she
told Atticus, " 'I'm sorry, brother.' " Scout noted that it was the only time she had
heard her aunt call her father "brother," and she looked to Jem for a reaction, "but he
was not listening." After Jem and Scout were attacked by Bob Ewell, Alexandra was
genuinely distressed. She claimed that the attack was " 'my fault,' " and twice called
Scout "darling" before returning to Jem's room to keep an eye on
him.