True, but her be a heireia and possibly involved with those mysteries that make so much sense with vampiric lore, even if a bit of a different rebirth in those mysteries

Well that makes her more as just a sower of disturbance, but a serious power player I suspect. Those do not survive for centuries or millennia unless smart and have long term plans they do not tend to share. (Also remember what Fabian said that her children do not tend to survive the turning, so it is unlikely she had already plans for him until she found out he had survived), The enemies they tend to have are as powerful as they themselves are.