geraldine alcorn , 29 , of pittsburgh , and her attorney declined to comment as they walked from magistrate 's courtroom wednesday .
exchange for the waiver , which means alcorn must now stand trial on the charge .
allegheny county prosecutors dropped two other misdemeanors she faced : luring a child into a vehicle and corruption of minors .
the girl 's mother , a single parent , complained to school officials after finding out alcorn had visited the girl at their home while the mother was working .