who was the little girl in chapter 32

As Jim talks, Will hears crying from an empty lot. It is the voice of a small girl, and familiar. Jim wants to walk away, but Will seeks out the sound. The girl calls out to the two boys: "Jim! Will! Oh God, it's you!" Jim is horrified and wants nothing to do with her, but Will is more sympathetic. He realizes that the young girl is Miss Foley, which becomes even clearer when they hear the carousel calliope music working again, proving that the ride has been repaired.