How did sydelle Pulaski solve her problem in the book the westing game?

In the book "The Westing Game," SyDELLe Pulaski solves her problem by using her skills as a secretary to uncover important information and clues. She pays close attention to details and uses her knowledge of shorthand to decipher a crucial message that helps move the investigation forward. Additionally, SyDELLe's determination and persistence in pursuing the truth ultimately lead to her successful resolution of the mystery.