It is too late to seek the 1st or 2nd EIP payments even as a recovery rebate credit. The deadline for that was May 17, 2024.
If she filed a return for 2021, there was a recovery rebate credit for the 3rd EIP payment which would show up on line 30 of her 2021 Form 1040. A 2021 return can be filed to seek a refund until April 15, 2025.
Not sure if you will be able to check her online IRS account----
https://www.irs.gov/payments/your-online-account
Here is the IRS 2021 Form 1040
https://www.irs.gov/pub/irs-prior/f1040--2021.pdf
or if you want bigger type use 1040SR for Seniors,
https://www.irs.gov/pub/irs-prior/f1040s--2021.pdf
And 2021 Instructions
https://www.irs.gov/pub/irs-prior/i1040gi--2021.pdf
2021 Tax and EIC Tables
https://www.irs.gov/pub/irs-prior/i1040tt--2021.pdf
Sch 1 : https://www.irs.gov/pub/irs-prior/f1040s1--2021.pdf
Sch 2 : https://www.irs.gov/pub/irs-prior/f1040s2--2021.pdf
Sch 3 : https://www.irs.gov/pub/irs-prior/f1040s3--2021.pdf
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
