Sentence 1: Andrea was babysitting her four year old niece. 
 Sentence 3: When Andrea came back, her niece was drawing on the walls 
 Sentence 4:  Andrea scrubbed the wall for an hour while her niece giggled 
 Sentence 5:  Her sister never noticed a thing 
 Option 1: She decided to leave the room to get something in the kitchen. 
 Option 2: She decided to put her niece down for a nap.