Day before yesterday she crossed the line. I was in my backyard and she couldn't see me. I heard her try to open the gate to my chicken yard... the gate that I put there when we used to be friendly. Luckily, it didn't open because DH had wired it shut for me the day before. I stepped out where she could see me and she looked at me... guilty expression... ran into her backyard for a moment, came back, hopped in her car and then drove away. I believe that she was going to open the gate and let them all out. That was after an afternoon of music VERY loud and installing what looks like a mini swing set full of birdfeeders right on the property line next to my run. DH mailed the letter yesterday..... today so far nothing... no response... but no music outdoors either. So now we wait. If anything happens this weekend we are going to install an electric fence to protect our chickens on Monday!!!