Former Girlfriends star Persia White has been cast as Abby Bennett, the mother who abandoned Bonnie (Kat Graham), on The Vampire Diaries, EW has learned exclusively. She’ll first appear in episode 312 and recur. Abby is described as a beautiful but troubled woman who is burdened by the secrets of her past that led her to leave Bonnie. She’s also “as determined and fiery as any Bennett woman.” Is that code for “she’s also a witch,” or, perhaps, was there a reason we learned in last week’s episode that someone can be either a witch or a vampire but never both?