Sentence 1: Sue got in her car and frowned at how filthy the window was. 
 Sentence 3: She wondered if he had worked hard to create that window art for her 
 Sentence 4:  Sue sort of felt bad as she cleaned it away 
 Sentence 5:  The next day, her dog created a new masterpiece on the window 
 Option 1: Her dog's nose had made quite a mess of the glass. 
 Option 2: Her dog was too short to even reach the window.