Donna Mills, best-known to soap aficionados for her iconic 1980-89 run as ice queen Abby on KNOTS LANDING, and more recently, her Daytime Emmy-winning turn as Nina’s murderous mother, Madeline, on GH (2014-25, 2018), has added another ruthless beauty to her roster: Lillian Cutler, the chilling matriarch in Lifetime’s four-part limited series V.C. ANDREWS’ DAWN.…