What pay rate should I expect for the following combination job?

I am a housekeeper/meal provider/elderly assistant/companion to a geriatric diabetic patient in Hawaii. I am mature with thirty years of housekeeping experience and a total of approximately three years of elderly companion assistance. I'm unsure of what my salary rate should be at this time. I have been with my current employers for over six months. I do blood glucose checks and assist with prescribed meds.

I know that when I was hired I took over the jobs of at least two previous employers, i.e. one housekeeper/cook and at least one care provider/elderly aide.