It says the younger girl’s parents called the authorities after the older girl turned 18. My question would be, did the sexual activity continue after the girl turned 18? It would make a big difference if the defense can prove everything happened when both girls were minors.
The facts of the story seem to change depending upon the source. According to several accounts I read yesterday, the parents did not find out about the sexual relationship until after the girl was already 18, and they notified the police immediately. And according to the reports, the sexual relationship did occur after the girl was over 18. Whether it also occurred before she was 18 is not clear.