Seems pretty unlikely to me. I think we would already know if she was.

@YourPalDuchessDiamond Well, they're both muscular females and they both have healing magic.

They don’t really look alike so I don’t think so. Also, if Hettie were Viney’s mother it probably would have been mentioned at some point, since a Coven Head’s daughter wanting to use different kinds of magic would be a pretty interesting story point.

@Daisy Aipom Yeah! That's true. Viney and Hettie Cutburn don't really look alike. While they do share similarities with each other, they obviously aren't related to each other, but don't you think it would be cool if it turns out they are actually related to each other?

Yeah, it would be pretty cool.

@Daisy Aipom Yeah! Anything is possible. It depends on whatever the story writers write. It was never revealed who Viney's mother even is since Viney is a minor character and she was featured in only four episodes. Or Viney could probably be Hettie Cutburn's foster daughter.