Sentence 1: Isabel loved decorating her room with posters. 
 Sentence 3: They would get ripped or wadded up, and often completely ruined 
 Sentence 4:  Isabel finally got desperate and went to a craft store 
 Sentence 5:  Her brother wouldn't be able to rip a poster super glued to the wall! 
 Option 1: But her little brother was constantly tearing them down. 
 Option 2: But her little brother was constantly eyeing them.