Eh, I don't think Catra's gonna turn out to be a princess - for one thing that hologram-cat-person is not as scrawny as her. Also, I'm not sure that the non-elemental princesses aren't part of the system - Scorpia, Netossa, Entrapta, and Spinnerella all make hologram-circle appearances (though Entrapta's is only visible when the camera cuts in on Adora looking at Glimmer's.) Also, given that the original She-Ra cartoon had Adora and Catra as rivals for the affection of Seahawk we should probably be careful about building theories too closely tied to the 80s canon (and what's with that 'she has her mother's eyes' pic when both of Catra's eyes are clearly different colors from the Queen's...) Also, I'm pretty sure that the Horde has only been around for like. 10-odd years. 20 tops. King Micah is one of the Horde's first casualties, so of course the war can't be much older than Glimmer, and of course it would be even shorter if Glimmer has actual memories of her dad. Also what was that fandom.wikia's source on Glimmer's parents? We know Bow has 2 dads because one of the VAs mentioned it in an interview, but I don't remember anything about Glimmer having 2 moms.