CS Arrears-Statue of Limitation

A few questions:

1. What really happens when the Statue of Limitation is met, and NCP is still paying arrears? Does the NCP just stop payment? Michigan is set at 10 years from the last day of payment due? So when the 10 years are up, payments stop?

2. Who really controls the arrears? Michigan keeps stating to us, the they will ask the CP if she will agree to those terms? WHat the hell does that mean? If a court orders you to pay, you have to pay, what the Hell does the CP have anything to do with that? Is Michigan CSE pulling our legs?

3. Michigan wants us (it affects my household thats why I am involved) to pay up front $$, and will set the rest as monthly payments, like I have a money tree in my backyard? What is the reason in making these statements.

The CP waited for 15 years and now is wanting $$$ for children that my DH has never had a relationship with. THese kids are married, and over 21 years old. What can we do to stop this maddness?

HELP.......