Because of her noticeable age, Flo posed as the grandmother of her youngest siblings, the twins Rory and Pandora. She lived with them and Walter, posing as the twins uncle.
One evening while the twins were secretly out patrolling, Flo had a clairvoyant dream about the death of her brother Maurice. She and Walter were then attacked by Lenz's minions resulting in Flo's death. Before dying, Flo encouraged Walter to tell the twin the truth and to protect the family.