Why do you presume to know where your child is? A reasonable person would give you the information but it appears that these are deliberate acts to shut you out. Nobody is home, you have no way to contact your children for a significant period of time -- this is an issue you may want to report. Would the police send out a crew to investigate immediately? I don't know. How do you know that she isn't leaving the state... with your children? Her acts are completely unreasonable and without any notice. Since you haven't heard from your children in almost TWO WEEKS -- I don't think you need to justify such a report.