My wife things because she is still in High School, they will continue to treat her as if she is under 18. And with this permissive lawless generation they will side with her.
The advise I would give the parents, is to try to reach a settlement outside the court. I would agree to pay for her private education through high school and to send her birthday cards on her birthday. She doesn't deserve it, but this is what I would do.
She will probably demand money to pay for her legal fees, but I would not agree to that saying those are the consequences of leaving home.
She will probably take this to court being an obviously prideful young woman. The court will allow the parents to pay the schooling just has the parent had attended (and to satisfy liberal justice) and then be done with her.
If she takes it to court, the she will get what her just deserts and leanness to her soul. Leave her in the devils hand in the hopes she will repent to the Lord whom she is offending here, and come to her right mind as the prodigal did - and find Salvation and forgiveness in Christ.
For without that, there is no hope for her.
Who cares, she can go to public school, parents are not obligated to fund the private high school or future college or a spoiled brat.