I gotta agreee with SS on this one, carry on as you normally do, and keep the fussing to a minimum. the minute you start ramping up the activities that agravate the old biddy you are stooping to her level and in the end will just cause yourself more grief and stress.
We had a neighbor move here from Ohio where he enjoyed a million city and county ordinances to back up his gripes with his neighbors, and for one reason or another ended up here where there are no laws what so ever restricting what a guy can do on your own property. Within two years, we went to war that started with him calling the local sherriffs office on me for my log splitter running after dark in the winter, somewhere around the six pm range. And like a lot of you, I first met his hostility with my own. Since there were no noise ordinances, I had the whole crew over for a cook out and we busted wood till 11pm. He was livid. I have a full scale civil war cannon that I built in high school, and it thundered its way through 40lbs of black powder on New years eve. A solid six hours of firing. He retaliated by glueing my mailbox shut with Gorrilla glue. I handed him one right back by dropping a few roofing nails on his driveway. Like a couple of children, we kept that war on for a solid three years till late one night I came home and him and his wife had slid off the road into the ditch pinning one door against the bank, and he was unable to push his door up on the other side, effectively caging him in.
I considered driving right on by, but I reckon I just didnt have it in me to do that to even my worst enemy, so I dropped a chain over the frame and yarded em out. I expected a prompt "I have a potty mouth" attitude, but was met instead of a lot of grattitude. And you know what? for the first time in several years now, I aint got to worry about the fuzz showing up when yard work goes after dark, and I dont have to be concerned if the latest copy of readers digest is locked behind a glob of Gorrilla glue.
My point is, I wouldnt make any effort to antagonize the gal by doing things that you normally wouldnt do, all that will create is a war and you can forget about any peace and quiet in your own home once that gets started. If you saw wood during the day, then go right ahead and saw your wood. Let her complain to the local PD, I am sure they will set her straight on the first call that you have every right to do that. Time to think with your head here and not your emotions.