The actress left the CW show back in 2015 — but fans always had a feeling she'd return. Almost two years ago, the show's executive producer Julie Plec told EW:
Nina has always said that if there’s something for her to do in the series finale that she will be there to do it...When she left, she said, ‘I want to see this character to its end at the end of the show, so I can’t wait to come back and put her to bed again.'
Nina announced her return with an Instagram post. "I know it's Thursday, but this is not a TBT. #BackOnSet #TVDForever," she said in the caption that accompanied the photo of the script, revealing the episode's title: "I Was Feeling Epic."