Sentence 1: Two weeks ago my wife noticed tiny flies near our window. 
 Sentence 3: Later that night she found the flies on the bedroom ceiling 
 Sentence 4:  We sprayed the bugs and shut the window 
 Sentence 5:  The next day we had the screen replaced 
 Option 1: The flies were outside and she told me to take an action right away. 
 Option 2: The flies were outside, and she paid them no mind.