What uneasiness or fear Harriet shared with the grown ups?

Harriet, the protagonist in "Harriet the Spy," expressed her uneasiness about the adult world and the complexities of relationships. She feared that her observations and candid thoughts might lead to misunderstandings and rejection from her peers and adults alike. This anxiety is compounded by her struggle to balance her desire for honesty with the social expectations of those around her, creating a tension between her identity as a spy and her need for acceptance. Ultimately, Harriet's reflections reveal her vulnerability and the challenges of growing up.