As mentioned by user Scorpion1, it is too late to file your return and claim your daughter as a dependent since she has filed her own return and did not indicate that she was being claimed.
However, if you do qualify to be able to claim your daughter as a dependent, then there is a way to correct the situation. Your daughter's return will need to be amended to make the correction that she can be claimed as a dependent on another return. After that is processed, then your return including her as a dependent can be processed.
Since amended returns must be filed by mail, my suggestion is that you go ahead and file your return electronically without including your daughter as a dependent. Then, after you have received your refund, amend both your return and your daughters return to change the dependency situation. Amend hers to show she can be claimed, and amend yours to claim her. Mail both amended returns together to the IRS for processing.
This will take some time, but at least the situation will be corrected.
Use the following TurboTax article to learn how to amend the returns: How do I amend my 2019 TurboTax Online return?
@Denice1957
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