My wife is 86 years old. She was on benzos for 50 years. No one has said she has dementia, but it seems like she does. Last week, she went to the hospital because she couldn't walk. She says she is in pain and wants to go to the hospital. The hospital did an MRI, a CAT scan, and an ultrasound. They sent her home and didn't find any reason to keep her in the hospital.
Let her rest and call hospice. She may be ready to die at home.
If she is asking to go to a hospital, you could have her admitted to a skilled nursing facility, (nursing home) which will feel much like a hospital and will have round the clock care.
You say she was on benzos for 50 years. Did she stop? If she stopped using the medication abruptly, it would cause serious withdrawal effects! Mention that to her doctor if that is the case.
You may want to call a hospice company now for an evaluation for your wife, I'm sorry to say.
Best of luck with a difficult situation.
You can call the hospice agency of your choice and they will come out and do an assessment.
And of course if your wife's care is getting to be too much for you, you may have to look into placing her in the appropriate facility, where hospice can assist her there as well.