Sentence 1: Diane had a history of people rude. 
 Sentence 3: The friend's feelings were really hurt 
 Sentence 4:  She decided not to be friends with Diane anymore 
 Sentence 5:  Diane realized that she was not a nice person 
 Option 1: After her friend begged her to stop being rude, Diane changed her ways. 
 Option 2: She said something very negative to her friend.