dennisadams30- You don't do anything until you hear back fro the IRS. But, if your divorce decree is dated after 2008, the IRS will not honor it. See the above answer. What you need is form 8332 signed by the ex. <a rel="nofollow" target="_blank" href="
https://www.irs.gov/pub/irs-pdf/f8332.pdf">https://www.irs.gov/pub/irs-pdf/f8332.pdf</a>
If your ex is not obeying the decree, your only remedy is to take her back to court
