I’ve had tenants and my father had tenants for oh, 50 years or so. If she pays the rent, takes reasonable care of her apartment, watches the house when you’re gone, etc., pick up the poop. While it’s annoying, it’s such a small thing compared to chasing rent.
I strongly disagree. I see this as a case of passive aggression on her part - dog = her; lawn=you. I am mystified as to why you put up with this for one minute. Are you male? If so, it would seem to me that you have a crush on her. Get over it. I dislike this woman, because people like her make it harder for the rest of us who have pets.