True, though all hell can break loose in situations like this where the minor's parent's don't approve of the relationship for whatever reason. That seems to be the case here - the article implies that the minor's parents disapproved because it was a homosexual relationship (that may or may not actually be the case), but regardless of their reason, it looks like the only reason the school and authorities became involved is because the minor's parents complained.
And did you see where it mentioned they knew and didn’t get cops involved until after she turned 18? This is not protecting their kid it is about getting back at the other girl involved.