"There's not much of a coven left."

It's pretty much just Josie and Lizzie, and even then they're not really part of the coven. They're just beholden to this by genetics, nothing else.

"The other side effect of this curse is that when the Merge is complete, the lives of all the coven members are tied to the coven leader. So if they die before a new Merge is completed so does the rest of the coven. Which is basically what happened at my parents wedding."