I read a while ago that she may be aligned with oryxs sister (forgot the name) and that she planned crota death in order to bring the more powerful oryx to fight the guardian's and lose. So sword logic would make the sister stronger than oryx and take his position as leader of the hive. So many different angles this games lore could go I'm excited for year 10 to find out if the traveler is the darkness or some other entity or its just some guys dream like lost :p