How do i change my dwpendent to a qualifying dependent?

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/00/26258

Claim her as a dependent if she qualifies and mail your return. She has to amend her return to report that someone else can claim her after the original is processed and any tax liability settled. 

Assuming you can claim her.  How old is she?  Is she a full time student?  If she made over $4,300 you might not be able to claim her anymore even if she lived at home.