Quote Originally Posted by Kareeah_Indaga View Post
But there's a quest branch option for the Dragonborn to wipe them out him- or herself, so Bethesda will have to write in an allowance for that.
Babette and the Night Mother survive in either case, and Cicero lives if you opt to destroy the Brotherhood. So a story about how the little vampire and a handful of other (unnamed) survivors restored the DB to its glory, even assassinating the Emperor covers both options.