Non-custodial parent is paying and has been paying for child support. Non-custodial parent lives in Hawaii. The past couple months custodial parent left the state of North Dakota to move to Lousiana for a job opportunity as a professor. One child has dropped off of the child support due to turning 18 and not going to school. The second child does not turn 18 yet but has graduated from high school. both of the children are living on their own in North Dakota both working to pay their bills and rent, while mother in Lousiana collects the child support. Is this legal?