True. But the parents have a legal right to control what she does until 18.
No they don’t.
Parents carry financial responsibility until 18 but courts schools and law enforcement cater to the child from about 12 on. Abortions, where to live, whether a child comes home or stays out all night, who they see, media and internet, is all non enforceable by parents.
The law will side with the child often.
My advice. Cut the kid loose. Minimal financial support or encourage him to legally emancipate. If I were to have children today I would do it on a large farm with no electronics, homeschooled.