Sentence 1: Marlene was late for work that evening. 
 Sentence 3: She met a few patrons who asked her for beers 
 Sentence 4:  And when she arrived at the counter, she saw another barmaid there 
 Sentence 5:  Marlene had made the mistake of coming on her day off 
 Option 1: When she arrived there was no one in the bar. 
 Option 2: When she arrived there was already a big crowd in the bar.