Sentence 1: Joy was jealous when she didn't get an invitation to a sleep-over. 
 Sentence 3: She said the house of the sleep-over was infested with bed bugs 
 Sentence 4:  Joy was glad when she heard the sleep-over was cancelled 
 Sentence 5:  But Joy's mom heard of the infestation and made her clean the house 
 Option 1: Joy wanted to get revenge, so she started a rumor. 
 Option 2: Joy wanted to get revenge, so she threw her own sleep-over on the same night.