Did you claim your daughter on the tax return you filed? If the name does not match what is on the social security card, then the return should be automatically rejected. Changing her name on the birth certificate does not change it with social security.
If your return was accepted without your daughter on it at all and no one else claims her, you may file an amended return to claim your daughter. However, until you change her name on her social security card, you will want to file using her old last name.
Amended returns are not yet available for 2021, but don't worry, you have 3 years from the due date to amend your return.
@Maymolly777
