Just scoop it up and put it on their porch.
1) Put it through the mail slot.
2) Place it directly where she steps to leave the house.
3) Smash it on their windshield wipers.
Moral of the story:
If your neighbors can run over you like a doormat, they won't respect you. Same everywhere.
I make my neighbors know, "Let your dog pee or defecate on your lawn first, before bringing it around past mine. I don't consider crapping on my lawn a friendly gesture from you or your dog."
People around here have learned, and they apparently warn new buyers when they move in, going on 34 years, now.
Yep - had an apartment in Italy and the Navy couple above us had a dog that would crap on the stairs between me and the ground level - I started putting it on their windshield until it stopped....