You have taken on too much, gillybob, and now, naturally, you resent it. It's time for a rethink.
However, you have no right to dictate to your sister what her duties will be. You cannot make somebody else do things or expect her to become the doormat that you are.
I know this from experience as my sister tried it with me. She failed to realise that I had an entirely different relationship with our mother. My mother wanted her, not me, as 'slave' so it just didn't work!
COUNTRY, CITY, AREA, PLACE -Game 21
To obliterate your address on packaging