The answer that fits the blank provided above is BROTHER. This question is based on Harper Lee's novel "To Kill a Mockingbird". So when Atticus returns home for the first time after the trial, Aunt Alexandra empathized for him and called him Brother. Hope this helps.
Mrs. Mallard's character is not heartbroken or sad, but instead she is happy that she doesn't have to care for anyone else anymore.
I literally just had to answer questions on this short story a unit back.