Companion Care Needed For My Mother

I have an 86yr old mother who needs companionship and help with general day to day tasks. She gets around, does have back and minor balance issues, some declining memory. Looking for someone who is patient and caring to help with reminders, help with light duty house keeping, short walks, help with meals, run errands, take her shopping, keep her engaged in conversations, etc. She's very sweet and just needs someone around to help, stay active and stay mentally engaged. Initially looking for 3 days a week 4hrs a day.