I am trying to finish my divorce. I have two children which I have 100% of the time and she pays me child support. I am also on state aid but I check

If you have already filed then you will need to serve your spouse (by mail if cooperative or by another adult or process server). Once served, she has 30 days to respond. In your case it would be best to have an attorney prepare a marital settlement agreement that outlines the current custody arrangement as well as child support.