Volume 2: Beautiful Creatures

... Now, where were we?  When last we checked in with Seth and Mallory, they were still reeling from the loss of their cherished companion Billy. Mallory dealt with her grief in a perfectly healthy way, i.e. beating a stripper half to death (a fact she has yet to share with her husband). But Seth has secrets of his own, and it looks like his past is finally coming back to haunt him in the form of Lola, his hitherto unmentioned vampire progeny.

11. An English Girl in Prague
Lola meets two very odd men on Christmas Eve in the Czech capital.