I saw.  I like that secret of hers.  It'll put an interesting spin on things when the clans meet.

I have some ideas for how the Mercer clan might function in society, because I've been thinking, how do these big numbers of blood-suckers manage to stay anywhere?  And how do they manage not to slaughter everyone?

There's a cycle they go through, about every 7 or 8 years.  They all move to a substantially populated town or city.  Jonathan moves into the city proper and passes himself off as a doctor (not hard given his decades of education) and Eleanora goes with him posing as his wife.  Elizabeth moves into the outskirts, somewhere as quiet as possible, with all her other vampires (including, but not limited to, Kilroy and Nadya).  Jonathan does his thing as a doctor, and is pretty good at it, but when faced with a patient dead or irreversibly dying, takes them to the outskirts, under the guise of knowing a really cheap coffin maker, where he and his mother and the others can eat with minimum suspicion and minimal killing.  

Just an idea I wanted to write down before I forget it.