While watching season two, it struck me that Lilith and Maryann have a LOT in common. Both of them really crave chaos and bloodshed. Both of them are ancient Godlike creatures. And their blood has a detrimental effect on vampires. What if Lilith was simply a maenad in her mortal life, whose blood now has unique effects on vampires, and whose evil spirit can still manifest herself? The writers and Ball have teased that Lilith is beyond vampire, so I don't think it's reasonable to call her *just* a vampire. She's definitely something maenad-y.