Lilith is a name that appears once in the Hebrew version of the book of Isaiah. The name gets linked to the idea of a primordial she-demon, Adam's first wife who is banished from the garden, in a bunch of esoteric writings and early Kabbala tradition. Part of the reason this happens is that Lilith's name is translated as "lamia", an actual Greek demon who stole children, in the Greek versions of the Christian bible. There's been a modern tradition of feminist writers seeking to "reclaim" Lilith as a sort of positive martyr figure of defiance against patriarchy, since her sin was disobedience to Adam. I'm pretty sure it's from this idea of Lilith as the first proud defiant woman that troons are pulling from, since it's a really popular idea in online witch and wicca circles.
E: What Inside your walls said, the choice in name is very "superficial, online crystals and magic feminism".