It is simply not clear to us what you did. If you e-filed with your sister shown as a dependent and then tried to change it after you e-filed, that change did not go through. When did you make the change?
If your return that claims your sister as a dependent is accepted by the IRS, then she will have to file her own return by mail; she will not be able to e-file. And then after your own return that claimed her is fully processed, you will have to file an amended return.
But until you know if your e-file is accepted or rejected, there is nothing you can do. Wait for the email that tells you if your return was accepted or rejected. The IRS starts to accept e-files on January 29.
**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.**
