I am being accused of "Interference with Child Custody" from the parents of a 16 year old girl. I am in Georgia and 37 years old. What should I expect?

In reading what I can of the law, it states "The key to each is that the child is being illegally kept from his legal guardian. If you knowingly or recklessly take a child from the person who has legal custody of that child, then you have committed interference with custody." I did NOT illegally keep the girl from her parents and she not only gave full consent for me to take her home from school, she asked me too. The other times that I have transported this girl, her parents or friends parents knew about it and said it was OK. However, the parents have decided they did not want me to spend time with the girl and now bringing me up on these charges. I have since cut all ties with this girl and have had no contact with her whatsoever. I never picked the girl up from her house and only took her home straight from school or met up with her at a friends or public place.