Who is Mr. Fabio Pucci from She's Come Undone and what is their importance?

Mr. Fabio Pucci was Dolores' guidance counselor in high school. Dolores says that Mr. Pucci stood beside her through many tough times, including suspensions, overdue library books, and excessive absences. It is Mr. Pucci who believes Dolores can handle college and encourages her to continue her schooling.