Where can a 100 year old with $1000 a month SSI get nursing home care?

I take it you're Jewish?   Have you contacted your local Jewish Welfare Federation?    They might be able to help; I've found them to be very resourceful and helpful in my area.

In addition, more information would be helpful.   Are you referring to care at home, or at a facility?   Is your GM the widow of a Veteran?   What are her medical conditions, and is dementia involved?

You need to contact the Lake County department of services & go through them to apply for Medi-cal. Medi-cal will pay for long term care. You’ll also need to work with the persons doctor on how to get admission to a nursing home unless the person is hospitalized—if they are hospitalized then you talk to talk to the hospital social worker, they will find a facility with a bed and arrange the transfer.

Who has her POA? Social worker or finance department at nursing home with Medicaid beds will help to complete the Medicaid application.

Need more information please.

Anywhere, please be more descriptive and we will tell you how to go about it.