I'm sure she isn't "deliberately" harming anything...she is just weeding her fence which is in her yard but the roots are nearby so they are absorbing the stuff. I'm assuming she is using roundup or something but I'm not sure. I've never seen her using anything but there is a definite line of dead grass under the fence and my butterfly bush is technically right on the property line which is within a few inches of her fence. I'm going to have to find a place to move it to.
I mean, I'm unhappy with the situation but she really isn't doing anything wrong. The neighbor behind me has a fence also but he's "cool"...he said that "my" side of the fence is mine so do what I want to with it, plant flowers, hang feeders etc. It's just going to be a pain if I have to but another fence up a foot from hers and leave that space in between but I don't see any other way to have a yard that I want.
Here's a picture--please excuse the yard...this winter was rough!! It's all mud right now from the snow/rain so I haven't had a chance to get out and do anything with it....