Sally Sue

Jocelyn Mattka as Sally Mueller

Sally Mueller is a resident of Derry and a classmate of The Losers Club and student of Mrs. Douglas. She is one of the wealthiest residents of Derry along with her best friend Greta Bowie and her family and ancestors are well known for being part of Derry's incidents as well as milestones and events. It is not known what happens to her after Summer of 1958.