@Kyliepower3691
This thread has gotten long and meandering, but the solution for your situation is simple (assuming you and the other parent live together):
1. The father cannot e-file. He has to mail in a paper return. He can claim the child as a dependent for full tax benefits (EITC, child tax credit and, if appropriate, Head of Household filing status and the day care credit).
2. You have to file an amended return, deleting the child and the EITC (and paying back the difference). Do not wait for the IRS letter, interest and penalties will accrue. The IRS letter is only going to tell you to file an amended return.
When unmarried parents live together, the 2nd parent should not enter the child, at all, on her tax return or in TTax.
