Chatter is right, find out the min time and amount needed to file first with your state laws. Go to online docket and find a case with successful motion for contempt listed. Go to courthouse, get case file and copy the motion for use as a template. You will need your bank records to prove your allegation that no money was received. Ask also for court costs and attorney fees if nec usually awarded in contempt cases. Case comes up quickly, she will need to prove she paid. Nothing else will be discussed in the hearing except that, 5-30 min. Ask that it be paid thru the state from now on and the state will file against her instead of you in the future. As a percentage there are way more deadbeat mothers than fathers, the majority of NCP females I believe. Don't accept Anything from her now unless it's a summons or subpeona from a process server, do it all through the court.