Hi there,
The symptom description at her age brings up in most likelihood of her suffering from dementia along with psychotic symptoms associated to it. But in order to confirm the same., she needs to be interviewed and evaluated in person for ascertaining the diagnosis with surety.
Next Steps
It is best to consult a psychiatrist (geriatric specialist) and for a confirmation regarding the same. She can be helped but yo wat extent is sometjing depending on the diagnosis and severity (which is commentable only after evaluation).
Health Tips
hope this helps... Feel free to connect in case of any further queries.... Take care