Earlier I spoiled that The Vampire Diaries had begun casting for Bonnie's mother, Abbie Bennett. I can now reveal that not only will we meet Abby, but she'll be quite a handful.
Her absentee mom is coming to town! And from what we understand, Abby Bennett is quite a handful. Bonnie definitely gets her fiery determination from her mother. But it'll be a fruitful visit, backstory-wise. We'll finally learn what led Abby to abandon her daughter.
Source: TV Guide