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

Snoopy: picked up her papers, and then by chance noticed something stuck between 2 of the pages. As she took a closer look, she discovered it was a.............

Snoopy: now being the year 2240, at 25 years of age, Heriot did not hesitate to take her professor up on the offer. The deal was done and she set off to her own study, papers in hand, when all of a sudden, who should she meet along the way...............................

Skyking: arranged a meeting with her professor. He claimed he had exhausted all possibilities and agreed to hand over his notes to Heriot for the sum of.......