Sentence 1: Gina had to pay library fines before she could check out a book. 
 Sentence 3: The book wasn't on the shelf 
 Sentence 4:  The book had been checked out by another person 
 Sentence 5:  Gina would have to wait up to a month for the book to be returned 
 Option 1: After paying them she went to retrieve the book she wanted to read. 
 Option 2: After left without a book and without paying for her old ones.