Snoopy: Her professor was a very wise man so she came to the conclusion that 1. He had placed the key within his notes intentionally 2. He was unable to talk to her about it for reasons unknown.
She knew the reasons for secrecy would be what would lead her to the next clue
(hide) Keep your Inbox clean by Archiving important messages and regularly using the Delete All Messages in your Inbox option. (pauloaguia) (show all tips)