Hahahahaha!!! ....burn her house down.....that is so something I would have said, but refrained because people get their feathers ruffled to easily. (I've been attacked many-a-times on FB because of a sassy or silly comment, sometimes it's just not worth it.) So, onto my people-friendly remark: You could plant poison ivy and stinging nettles at the property line. All mixed in with those plants that make it hard for her to cross over....she'll never know what hit her till it's too late.