Sentence 1: Mindy had a very bad memory. 
 Sentence 3: She decided to risk it and said "Smith" 
 Sentence 4:  The friend couldn't believe it and said her name was Malhotra 
 Sentence 5:  Mindy lost a good friend that day because she was bad with names 
 Option 1: She couldn't remember her friend's last name. 
 Option 2: She managed to remember that her friend's last name was Jackson.