Re: smearing of feces
At the NH where my mother was, the staff was trained to change a person's diaper at the first sign of a BM. People didn't have enough time to feel it or smear it - they were whisked away and changed before they had the chance.
I am not sure if your Aunt is doing it as a form of protest, by accident, or just because it is there and she wants to play with it. An AD pateint has not much control over what they do, especially in the later stages.
I hope your Aunt gets the care she needs.