She was a relic of a distant past, and so too was the empire. These equally time-displaced ponies offered her a sense of solidarity she could find nowhere else. Nopony found her mannerisms confusing, they were completely disconnected from the Nightmare Moon incident, and they all shared in the common struggle of adapting to a world that left them behind long ago. If Princess Cadence wasn’t so well versed in the modern political scene Luna would have gleefully seized the reigns of the Empire. Heck, she already had the shimmering mane. 