Alison, it is one house but broken into 3 units. Basia and I are on the top floor and so is the other tenant and her dog, while the owners live on the bottom floor. The owner is also self employed and works from home so he is there all day. I guess my neighbor must be home during the day as well if she's taking her dog out. She takes him out into the front of the house to do his business which is in direct view from the only 2 windows basia has access to.
I did make 3 strategic changes that seem to work. (1) Turned on the radio (2) blocked the window (3) put her breakfast down on the floor and immediately scurried out without saying a word.
He told me she barked twice but very briefly. I asked him to tell me if it ever is a nuisance for him and so far so good. Fingers crossed. Thanks for the suggestions and words of encouragement