She will have to amend her tax return to change her dependency to being claimed as a dependent.
See this TurboTax support FAQ for amending a 2021 tax return originally completed and filed using TurboTax - https://ttlc.intuit.com/community/tax-return/help/how-do-i-amend-my-2021-return/00/2544441
You will have to print and mail your tax return claiming her as your dependent. The return cannot be e-filed as the IRS has already received your daughter's return where she indicated she was not a dependent.
See this TurboTax support FAQ for how to print and mail a tax return - https://ttlc.intuit.com/community/printing/help/how-do-i-print-and-mail-my-return-in-turbotax-online...
