Board Thread:Wiki-Related Discussion/@comment-1916997-20171222202521/@comment-25491743-20180501223454

I think the  reason Alice counts, while Regina doesn't is because Regina only gave blood, whereas Alice had more a direct contact with the coven - she took part in their ritual and wore their cloak. Regina just happened to give her blood at the same place the witches were located, but she didn't do anything with them directly (if she magically sent her blood to Gothel, from another location, the argument for Regina being a member probably wouldn't occur).