Sentence 1: Kate wanted to go to a museum. 
 Sentence 3: She went alone on a Saturday afternoon 
 Sentence 4:  She walked alone and viewed the exhibits 
 Sentence 5:  It wasn't as fun as she had remembered 
 Option 1: She hadn't been since she was a child. 
 Option 2: But she has a lot of workloads to do and doesn't have a free time.