The instructions from the sleep lab said that she was to bring pajamas, her typical toiletries, and clothes for the next day along with any necessary medications. After the night, she would be able to get ready for school at the hospital and head off for her day from there.
Jordan’s two sisters were going to be spending the bulk of the evening with their Dad (and presumably Melissa) while Sally accompanied Jordan to the facility. She would then return to spend the rest of the night at home with the girls while Jordan remained alone at the hospital.