Sheryl was last seen in Wassaic, New York on September 24, 1973. She was employed by the Wassaic State School, a reform school, at the time. She has never been heard from again. Sheryl is originally from Ontario County, New York city of Phelps, and maintained regular contact with her loved ones prior to her disappearance. They have not heard from her since 1973. She left behind her personal belongings, including two paychecks, when she vanished.

For unclear reasons, Sheryl wasn't reported missing until November 1998, twenty-five years after she disappeared. Few details are available in her case, which remains unsolved.