User blog comment:FanMade Girl 20/Melissa Roxburgh's two characters on Legends and Arrow/@comment-3221148-20161208165528

Pu-lease, there are unexplained occurrences of same actor playing multiple characters within a universe all the time. On Gotham, they introduced Isabella, who looked EXACTLY like another character Kristen Kringle. The characters noticed that, but, ultimately, it was never explained.