Our mother is living independently with moderate dementia. She has an aide visit 2 days a week for 2 hours, but won't let her do anything. She does not want any help but is no longer cooking, cleaning and recently went for a walk to the neighbors at dusk without her walker. She can understand what we tell her, but her reasoning is no longer sound. We would like for someone to spend much more time at her house. However, she is adamantly opposed. How do we talk to her? What do we do?