Sentence 1: Amy had just started her new job. 
 Sentence 3: After a month she still had only a few shifts 
 Sentence 4:  She asked her boss if she could work more shifts 
 Sentence 5:  She was disappointed to hear there were no more available 
 Option 1: She was scheduled for 3 double-shifts in a row. 
 Option 2: When the first schedule was posted she had very few hours.