She is incontinent but can sometimes make it to the bathroom with my help. She is not insured and not eligible for Medicare, Medicaid or SSI. She seems mentally sharp with a glaring exception - hallucinations and delusion. She is convinced her ex-husband of 8 years (they were married for 31 years) is sleeping in her bed at night and today asked me to make a sandwich for him. She is frustrated with me for not being able to see him as I am always out of the room when he comes and therefore cannot tell her I believe he is really here. She also has small worms with metal heads and metal spines that come and go into her fingertips that she beheads and puts in a jar for me to see, but they disappear when I try to see them. I don't know what to do.
As for practical advice - getting incontinence products, a bedside commode and a transport wheelchair should help make your life a little easier.
Please tell us why she isn't eligible for any benefits so that we have context.
Sixty-six is pretty young to be frail, but is she older than that? Hallucinations can mean she is dehydrated, has a UTI, uncontrolled diabetes or some other treatable health issue.
Please call 911 and tell them she is hallucinating and needs to be checked for a UTI or dehydration. The EMTs will know how to coax her to go. Don't tell her they're coming. If you are her POA make sure to take the paperwork. If you're not, make sure you tell them you can no longer care for her at home and that she's an unsafe discharge. Ask to talk to the hospital social worker. She may need a legal guardian who will then take over managing her affairs and get her transitioned into a facility.
Her care is going to become more and more challenging for you if she has dementia.
The confusing part of this post is why the daughter doesn't qualify for Medicare or Medicaid. Hopefully the OP will be back to explain.