Patty has been nice too long. The aunt is just using this as an excuse to get free labor. If the aunt had said, "Patty, while you are here, would you mind doing x,y,z because it is difficult for me to do" I think Patty would be fine helping out. But saying it is payment for something that she gets no benefit from and them being things it sounds like the aunt routinely does, just makes her unpaid labor.
Patty needs to give her mom a list of chores to do for the favor of driving her to and from the aunts.
Eta to fix typing.