Companion Care Needed

My mother has dementia / Alzheimer's. She is prone to falls, particularly at night, so we are looking for someone to sit with her. She is already in assisted living, so they take care of meds, cleaning, meals, etc. We just need someone for companionship and helping her get around if needed. Hours are flexible, but the key areas of need are late evening / early night and very early AM. Location is Nacogdoches.