N.C. Gen. Stat. 14-316.1 provides that a person who neglects a child commits a misdemeanor
. Neglect in this case is defined as: "Creates or allows to be created serious emotional damage to the juvenile
; serious emotional damage is evidenced by a juvenile's severe anxiety, depression, withdrawal, or aggressive behavior toward himself or others."
So, if your child came back and was terrified at being left with a complete stranger, then that would be a crime under NC law and you can contact local law enforcement and make out a report.
That's really the only law that I can find which may apply to your circumstances.
The only other thing that you can do would be to sue the babysitter for negligent infliction of emotional distress,. You could sue in district court
and probably get $1,000 in damages. That would certainly give the babysitter a wake-up call. Then, you could garnish her wages -- which would certainly teach her a lesson.
That's everything there is under NC law. There would be more, if the child were physically injured, exposed to sexual exploitation, etc. But, just leaving the child with a stranger doesn't leave a lot of options.
Please let me know if I can clarify my answer or be of further assistance.
Hope this helps.