Hushed Willows How much caffeine does it take to kill a man?

I'm assuming Lumi told a lot about the court's meaning and customs behind the scenes

Lumiya? Called Eilonwy out hoping the faerie monarch was in her usual spot doing whatever she did so much these days. And she was. Eilonwy trotted up to her with news on her throat aching to get out. I got news, she said with excitement, though she didn't really know whether the energy came from the feeling of usefulness or somewhere else.