Handle ahole neighbor

How would y’all handle a nasty old lady neighbor who sh00ts through YOUR fence line to scare your chickens away from the fence when they are by her porch which is on the other side. She does this only bcuz she doesn’t want them to poop near her home. It’s on my property and the fence is mine. She’s got one in the past 3 years ago and it passed away and when confronted I thought she stopped but my daughter just witnessed her do it. She uses a pellet pewpew so I can’t hear it in the house. We live in the county and the deputies say there is nothing they can do about it.