Also, you should attach a copy of the POA to the mailed tax return that authorizes you to file tax returns for her. A "financial" POA does not necessary allow tax returns. The IRS would probably also want IRS form 2848 to be included.
https://www.irs.gov/forms-pubs/about-form-2848
TurboTax 2020 will not be available for filing until sometime in January 2021.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
