I suspect it's toward the west, since that's where the sun sets -- but who really knows. Dickinson never said.
Anyway, speaking of directions and the the poetry of Emily Dickinson, which direction do you think Dickinson wrote about the most? North, south, east or west?
I checked this out at the online Emily Dickinson Archive, and the results are below.
Dickinson used the word "compass" in 4 poems, but in only one did she mean a "compass," an instrument to locate a direction. Three times she used the word as some form of the verb "to compass," to go around in a circular course. Dickinson also used the word "direction" once -- but she did use north, south, east and west multiple times.
Hmm. Maybe that carriage was heading east after all.