Companion Care Needed

About who needs care: My sister was diagnosed with dementia 2 years ago. Lives by herself in her home, next to me. No serious health concerns otherwise, but needs guardrails to keep from making mistakes. She has a good dog. About the care needs: Perhaps someone older, need to be computer savvy, if only to fix her laptop that she keep turning off. My sister works in our grow beds, growing veggies and flowers. Services needed include: companionship. The schedule for my sister may change very shortly. This may turn into five (5) days a week Monday through Friday 1:00 to 5:00 with the possibility of even more hours, since dementia only goes in one direction.