Companion Care Needed - Full-time / Part-time

About who needs care: My Mom is very alert and has minor memory issues, and has CLL (which is not a big deal now, she takes a few pills a day). She lives with my Sister who is going away for 3 weeks. I can take her for half the time. I am looking for someone to stay with her from Aug 26-Sept 7. About the care needs: Female, easy going. Stronger to help my Mom if she needs to navigate stairs. She has a walker and is very frail, but in good health. She weighs approx 110 lbs.