You're full of it. You specifically said "chores" when you have one not even a chore. Unloading the dishwasher isn't a chore especially for a gift like that.
You should not only BE the dishwasher, you should be the floor mop, you should be the pressure washer for the deck and you should be the wheel barrow for the yard. Remember that gift when it's time to spread mulch, change the oil in the cars or any time your mother is going to do something you damn well should be able to do instead.