Played by Dark Shadows' own Nancy Barrett!
Part of the crux of the original Viki/Dorian animus was that Dorian always believed Viki cast the deciding vote on the hospital board to have her removed from the hospital after the Toland affair. In reality, Viki was reportedly the only one who said she should remain. It nearly killed me when - around thirty years later - Viki actually told Dorian this, onscreen, in the second Malone run in 2004. They promptly cut to commercial. When they came back to their set of scenes late in the episode after wasting time on McBain, Paul Cramer, whatever else, Dorian and Viki had simply wrapped up their conversation in our absence and Dorian was 'so glad we had that settled!' I almost threw something at the TV. It was endemic of the problems of that run.