Until the child is emancipated, the Court's order governs the custody issue. If she wants to live with her grandmother, perhaps Grandmother should file for custody. Usually, a 16 year old "child's" preferences will be given a lot of weight in a custody dispute, especially since no parent is involved (i.e., it would be a dispute between third parties). Until she is 18 or emancipated, however, the Family Court has jurisdiction over her.
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