Sentence 1: Sam heard a rustling sound in the cupboard. 
 Sentence 3: She set out a trap with a dab of peanut butter and waited 
 Sentence 4:  Sam heard a loud snap 
 Sentence 5:  She tossed the dead mouse into the trash 
 Option 1: She assumed the mouse had returned. 
 Option 2: She assumed her son was hiding there.