My wife has walked out on myself and our 4 children. She has given no reason for this and is constantly dictating when she is seeing our children, when she is coming into the home and will only communicate when it suits herself. She has told me that she is taking our children over to Northern Ireland to see her family and that she wants the car to do so. I am extremely concerned that if she goes and takes them, then they will not return. Her parents do not live that far away from the Southern Irish border. What are my rights? Can I stop this from happening?