If she already e-filed and her return was accepted---we have bad news for you---this is not a quick fix. If you get lucky and her e-file is rejected, she can fix it by going to MY INFO and changing the way she answered the question that asked if someone else can claim her as a dependent. Then she can just re-file it.
If the return was accepted:
MY DEPENDENT SAID HE COULD NOT BE CLAIMED
Your dependent filed a return without saying he could be claimed on your return and your return was rejected? AFTER his return has been fully processed and he has received his refund, he has to file an amended return that says he can be claimed as a dependent on someone else’s return. Amended returns must be prepared on a Form 1040X. It takes the IRS at least four to six months to process an amended return.
Meanwhile, since your e-filed return has been rejected, you now have to print and mail it in to the IRS. You will not be able to e-file. You do not have to wait for your dependent’s amended return to be processed. Remember that when you mail a return, you need to include copies of your W-2, etc. with your return. Use a mailing service like certified mail that will track it so you will know that the IRS received it.
Or—-another option
GET IP pin in order to e-file if your dependent’s SSN was claimed on another return
https://www.irs.gov/newsroom/irs-takes-steps-to-help-prevent-refund-delays-by-accepting-duplicate-de...
https://www.irs.gov/identity-theft-fraud-scams/get-an-identity-protection-pin
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
