What is the symbol that you can see on the princess diares

In the section titled, Wednesday, October 15-Thursday, October 16, the fact that Grandmire turns out to be the catalyst who leaks the story to the press adds to the symbolic role that Grandmire plays in the story. Grandmire represents an aspect of Mia's personality that she is only gradually beginning to embrace. By forcing Mia to publicly acknowledge her role as princess of Genovia, Grandmire is forcing Mia to own the part of herself that is powerful, dominant and assertive.

I am not sure what you mean by "on the princess diaries".