Weekend Companion Care Needed In Brooklyn, Possible Help With Kids And Dog For Extra Hours

I live with my 82-year-old mother with Alzheimers, my husband, two kids (ages 8 and 3) and a dog. We are primarily looking for someone that can work occasional weekends for a few hours each day when we are gone for most of the day, to keep her company, take her on a walk, and prepare her food. We are also looking for someone who can help with other tasks from time to time, like occasionally walking the dog or helping with the kids. This wouldn't be frequent and the primary role would be for my mother, but helping in other ways would allow for extra hours.