No the court cannot enforce visitation after she is 18
In accordance with the Avvo community guidelines, this communication does not constitute "legal advice", nor does it form an attorney-client relationship. You should seek counsel in your geographic area regarding any specific questions.
No. Once a child is 18, he or she is no longer a minor and the Court loses jurisdiction over him/her. In other words, the judge can no longer order that a child visits with either mom or dad or otherwise.