In addition to the Chagnon and Kirby homes/events, it was also the street Bridget's 'August 3rd walking friend' lived on and where the Potter's lived (finders of the Crowe hatchet).
My pet theory arising out of Bridget's August 3rd evening walk, is that she enjoyed some 'adult' beverage during the walk and that is what resulted in her feeling ill the morning of the 4th.
A hangover might explain why Bridget's recollection of when Abby instructed her to clean the windows was 'off'.
For those that don't know what I'm referencing, Morse heard Abby give Bridget window cleaning instructions in the dining room after breakfast.
Bridget testified Abby told her to clean the windows sometime between 9-9:30 a.m. and after Morse had left the Borden home.