I would just keep your head down and let this blow over. I used to keep my horses at an old barn and had them in a back paddock... never got into anyone's business, never let them get into mine. It was quiet, but peaceful. After four years, moved Scooby into a stall/pen up front by the arena.
Got a phonecall from a boarder who told me in a pissy way that I needed to replace her extension cord because Scooby chewed through it when she ran it through his pen...
... I replaced it, gave her a warning about how she could have electrocuted my horse and it would cost her a whole lot more to replace him - then got out of there.
Now my horses are in my backyard - no drama.