If the grandparents had the permission of one parent to take the children, they did nothing wrong. Since there is no custody or visitation order in place, they can rely on their daughter's consent to the trip. I assume the children will be back within 1-2 weeks. The parent who granted permission over the other parent's objection may need to explain her actions to the divorce court in the near future. However, be prepared for a judge to not be too worked up about grandkids getting to go to North Carolina for a few days while their parents squabbled over custody. The less conflict you expose the children to, the better for them.
Oklahoma retains child custody jurisdiction. The local court will eventually enter orders regarding the who, where, when and how of child custody. Many factors go into a custody decision. One parent denying the other parent access to the children is just one of them. Get a lawyer in your area with family law experience. That person can help you see the trees and the forest.
If we do not have a written attorney-client agreement: I am not your lawyer; you are not my client; this is not legal advice.
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