Sentence 1: Marie and her sister never got along. 
 Sentence 3: They each went home angry 
 Sentence 4:  Marie swore she wouldn't see her sister anymore 
 Sentence 5:  She was mad that the fight had ruined Christmas 
 Option 1: They got in a huge fight on Christmas. 
 Option 2: When they were older they realized they wanted to be closer.