Alice, How Do I Ask My Demanding Neighbor to Move Her Stuff?

Dear Alice, I'm having problems with a neighbor for the first time in my decade living in New York. She came upstairs to pointedly complain about my dryer being on at 3 pm on a Saturday. My response was to tell her we were willing to accommodate her as much as possible, but that my laundry also needed to dry. We heard from her again on a different weekend when she could hear a tray table moving while my husband was cutting food during dinner. I was told she was nicer about it this time, but I al...