We all know Katerina Petrova AKA Kathrine Pierce what you don't know is she has a twin sister by the name of Daniela Petrova If you think Kathrine was mean sadistic or a bitch you don't know what your in for. Daniela even as a human was always known as the evil twin she was mean a bitch and could tap into that inner nerve someone had and strike something deep she was mean and cold to everyone well not everyone. To Kathrine, she was nice warm loveable Kathrine got why her sister was the way she was and understood her she didn't base her sister on things she had done she knew the type of person her sister was and they would always have each other back for as long as they both live even if they went just over 300yrs without seeing each other the bond was still strong and will always be there./ Read as Daniela Petrova reunites with her sister after centuries if being apart And how Kathrine helps her