When Daniela Harris comes back to mystic falls to help get rid of Katherine Pierce and in the meanwhile she meets a ex-lover she had been running from. She was friends with Katherine but quickly became one of her enemy's after Katherine tricked her which led Klaus to finding her but she got away and he had been after her for over 500 years the same amount he had been looking for Katherine they were both turned on the same day but out of both girls Klaus wanted Daniela more than Katherine. This starts in season 2 of TVD I DONT OWN ANY CHARACTERS BUT I DO OWN DANIELA HARRIS.
More details