(Written "pashinges" in MS.) As travel in Louisa's world seems to be mainly by foot, it appears she is using the word in accordance with its original meaning.

Passenger:

"1.a. A passer by or through. b. A traveller (usually on foot), a wayfarer. Now unusual." O.E.D.
Evidently, all the comings and goings are on the Cole Harbour Road.