As Theo on Hill House, Siegel is sensitive to ghosts and the evil that goes on around her. Both Viola and Theo are strong, independent women, but Viola has to be so in the 1600s when it was arguably more difficult to hold your ground as a woman. After Viola's death on Bly Manor, she becomes the vengeful Lady in the Lake, and Siegel is divinely terrifying as viewers learn how Viola becomes the Lady in episode eight.