If Mary did not live with you more than half the year then why is she on your tax return at all, unless your Ex gave you a 8332 form to release the dependent and child tax credit to you and the Ex is claiming the other credits?
If not then go to the personal information section, dependent, and totally delete Mary from your tax return.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
