What's especially hilarious about Lanfear is that even serving the Shadow, she managed to find a way to be in the spotlight. In all the concepts of darkness, shadow, night etc. she chose one of the two things luminous (stars and moon) and settled from the biggest brightest one of the two (she wouldn't settle for small distant lights!). The whole irony is that unlike the small stars, the Moon has no light of her own to cast, she only reflects the sun's - and I'm pretty sure that didn't occur to Lanfear when she chose the name.

Lanfear's sigil shows the Moon as the Queen among the smaller stars. They're also between the pincers of the crescent, as if she controls them and can crush them. Of course, as the moon waxes, those stars would disappear.