Will I lose my SSI benefits if my elderly Mom lives with us?

My sister who is getting disability from workman's comp wants our 81 yr old mother to move in with her & was told That the mother would lose her SSI & insurance & all benefits if she did...we are worried about our Mother living alone& my sister losing her benefits 2...so sad in a "catch 22'...

She would probably lose a rent subsidy if she is getting one.

Food stamps are usually based on household income, she might lose all or part of it.

You will lose SSI if you attempt to collect aid and attendance in caring for her.

It is really not going to matter I would say, income is the same, and mom's income is the same, no up in amount incoming for either of you, mom will use her foods stamps to contribute as if she were living alone, keep it simple and don't worry about it, don't think there is a significant amount of income to worry about.

You are receiving SSI because of a disability, is that right? And you will still have that disability when your mother moves in, right?

Will mother be paying you? Will it be more than the extra costs of having her there? If she is paying for her share of the groceries and heating bill etc., I don't see how that would change things. If she is paying you more and it brings your income above a qualifying level for the SSI benefit, then I guess it might have an impact.

Do you have a case worker for SSI that you could discuss this with in detail?