Following Malcolm's death, she becomes the master of the house, eventually locking her grandchildren in the attic to punish the next generation for the sins of the past.
Olivia Winfield's journey from a sharp-witted young woman in the 1920s to the cold matriarch of Flowers in the Attic is a tale of obsession and betrayal. After marrying Malcolm Foxworth, she is trapped in a loveless marriage at Foxworth Hall, where his cruelty and dark family secrets transform her into a vengeful, religiously warped woman. Flowers in the Attic: The Origin