Did you pay for the TurboTax Premier online edition or the Premier desktop CD/Download edition?
If you used the TurboTax online editions for 2021 and completed two tax returns you should have created two accounts. The online editions are only for one tax return per account and User ID.
If you used your online account for both your tax return and her tax return, then the second tax return overwrote the first return and the first return is gone.
