are you the custodial parent (she slept in your home more than 1843 nights)? if yes no form is required. if no you need to get a signed form 8332 from your ex and sumit it.
it can't be efiled so you need to includ ein your return form 8453
check the box for 8332
follow the instuuctions for mailing in the 8332
When and Where To File
If you are an ERO, you must mail Form 8453 to the IRS
within 3 business days after receiving acknowledgement
that the IRS has accepted the electronically filed tax
If you are filing your tax return using an online provider,
mail Form 8453 to the IRS within 3 business days after
you have received acknowledgement from your
intermediate service provider and/or transmitter that the
IRS has accepted your electronically filed tax return. If
you don’t receive an acknowledgement, you must contact
your intermediate service provider and/or transmitter.
Mail Form 8453 to:
Internal Revenue Service
Attn: Shipping and Receiving, 0254
Receipt and Control Branch
Austin, TX 73344-0254
She stays with me all the time except on weekends, I have her only 2nd weekend of the month; he is court ordered child support, but doesn't pay it; I pay for her things and medical insurance.