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There is no basis for you to file a suit against the ex husband. What you can do however is file for visitation with the child. If you had a prior relationship with your grand child a court will allow you visitation irrespective of what is in the divorce decree. The divorce decree put limits on the parents. A court does not have jurisdiction over your conduct unless you were a party to the case.
This communication is not intended as legal advice. A local attorney should always be consulted for legal advice. No client/attorney relationship is intended or created by this communication.
If the decree puts a restriction on your conduct, and you violate the decree then your daughter cannot be held in contempt unless she brought the child to you. If visitation is scheduled at McDonalds and you know about it and show up your daughter is not in contempt. She has no control over the situation and cannot be held in contempt for your conduct.