Not strictly. My assumption is just that An'she is roughly Light-associated. As for the bit I specified as falling under the purview of headcanon—An'she having a reflection at all—I usually assume that every entity has a reflection in the Void, regardless of their associations. I envision every inhabitant of the Void as an embodied opportunity cost of everything the entity that exists in its place could have been and what could have arisen instead of it or in its absence.