You can file the 2023 tax return now with her as your dependent and Head of Household filing status.
However, you will have to print and mail your tax return. It cannot be e-filed since a tax return with the dependent's Social Security number has already been received by the IRS.
The IRS will process your tax return as filed.
The amended return will take at least 20 weeks or longer for the IRS to process.
See this TurboTax support FAQ for how to print a tax return for mailing when using the online editions - https://ttlc.intuit.com/turbotax-support/en-us/help-article/printers-printing/print-mail-return-turb...
