Sentence 1: Tori thought samurai were really cool. 
 Sentence 3: She went to the library and checked out every book on samurai 
 Sentence 4:  She took them home and read them all 
 Sentence 5:  Now, she knows a lot about samurai! 
 Option 1: She has already learned a lot about them. 
 Option 2: She wanted to learn more about them.