i am not familiar with N.C. laws, however i do know that in most states the courts require that the move is in the best interest of the child. Im not sure what reasons she has for moving, but im assuming its nothing of great importance. She must have the courts approval and depending on your states laws, your approval. She must file with the courts to move and give proof its in the best interest of the child, the courts will give you due notice to contest the move. Their may be much more to it,(you have joint legal custody, and other laws may apply) Check you states laws and speak with an lawyer. good luck