@Eniiwinner Thanks for replying with details. Sadly--it is taking much longer than the "normal" four months for the IRS to process amended returns. Even though your e-filed amended return was accepted quickly, do not expect the IRS to process it quickly and issue a stimulus check to you. The stimulus money people received this year is really an advance on a credit you can get when you file your 2020 return, so you will be able to claim it then.
And....with the circumstances you describe, it might be possible for you to claim both your mom and your sister as your dependents. You said your mom does not work. Does she have any income (not counting Social Security)?
In addition to the criteria already given, try going through the IRS interview to see what it tells you about claiming your mom and sister.
IRS interview to help determine who can be claimed:
https://www.irs.gov/help/ita/who-can-i-claim-as-a-dependent
**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.**
