Sitter Job in San Francisco, California

My 83 year-old step-mother is coming to SF to visit October 11-18th, 2016. I need a female that would be able to assist her in showering (I don't have a tub) and dressing. This would only consist of approximately 2 hours in the later morning (maybe 9-10 until noonish). I am not sure what the prevailing wage would be, however I do understand that there is a lot more hassle to working 2 hours than just working 2 hours, so I am willing to take that into account re: wages. She is ambulatory, but unstable at times. She is only 4' 5'' tall and less that 100 lbs soaking wet. I will be here and available for assistance at all times, but I need help as I do not feel comfortable doing this myself. Please contact me if you are interested. Also let me know what you think a reasonable wage would be for the week. I am located in the Bayview San Francisco.