a basic problem. in 2023. your mother can not claim dependents if another taxpayer (in this case you) claims her as a dependent. This rule holds for 2024.
however, we don't know if your mother was required to file a return for 2023 or 2024.
there are other rules for claiming relatives as dependents. you may want to use this IRS webpage to check whether you can claim them.
another issue is if your mother filed for 2024, this will permanently block you from e-filing for 2024 since the same people have been on two tax returns. hers and yours.
