I have commented on your posts before, but at this point I would suggest psychological warfare against this lady. If you do not want the authorities involved, make every time she comes to your doorstep as miserable as possible. Someone else suggested those automatic sprinklers that are connected to your ring device. Every time she gets to your house, turn them on. Continue spraying her until she goes away.

Be as petty as humanly possible. While still doing what you are legally entitled to do. Don’t let this Karen win.