Mom is 84 yrs old with Dementia. Lives in Live Oak, alone, but brother lives next door. ( I live in Tampa) She is no longer able to clean her home (mentally cannot focus on task or remember what she was going to do or even recognize her home is a mess). She feels left out from things, my dad and her have been divorced for 24 years and she feels that she should be invitedone when his mother and him plan gatherings. Only interested in kitchen, bathrooms, and floors. Laundry would be great but not required for this inquiry. Her only income is her Social Security each month.
I would start that way. See what she is eligible for and how to apply to get it. Since she is moving but staying in the same state the Medicaid would be valid at both locations. When the house sells she will be expected to use the proceeds for her own care so she would be off of Medicaid while she spends her own funds and could re-apply when the funds run out.
I might go and stay with her in her home for a couple of days and get a true picture of what is going on. Except for the early stages, it's very risky to live a dementia patient alone in a house, even with a brother next door. Is it possible for her brother to move in or her move in with him?
You could also retain an professional person to assess her needs. They can go into he home and determine the areas that she needs help with, but I still think that input from the family is helpful. That's why it's vital that you know exactly what her deficits are and not just what she tells you.
http://elderaffairs.state.fl.us/doea/arc.php - You can find which area your mother lives in and check with them to see what she qualifies for. There are programs, but most require demonstrated financial need or assistance requirements documented by medical professional. Just heads up.