I wasn't going to have Adeline be in a coven, no. She is apart of the Marrok's pack. Though I suppose she could have belonged to a coven at one point. I like the idea of Adeline knowing the witch that created vampires, but perhaps she did not meet her until several centuries after the witch turned her children?

The Originals is a much better show than TVD ever was though, so it is worth watching.