When Atticus comes into jems room before bedtime to speak with the childrem, what information does he relay to them from Aunt Alexandra?

Atticus tells the children that Aunt Alexandra has decided (and convinced Atticus) it would be best for the family if she stays with them for "a while," which worries Scout even though she knows there's nothing to be done. No, Scout doesn't believe that Atticus feels this but she does later understand Atticus's need to have his sister involved in their lives.