How does a [night hag](https://www.d20pfsrd.com/bestiary/monster-listings/monstrous-humanoids/hag/hag-night/) get to the other planes in order to trade their foul earned souls? They seem to have the ability to go to ethereal plane but is that enough?

I checked out generic [hag coven](https://www.d20pfsrd.com/bestiary/monster-listings/monstrous-humanoids/hag/) description as well and they don't get any planar traveling magic.