Final answer:
George Hadley found a bloody scarf that belonged to his wife Lydia, leading to the decision to shut off the virtual reality nursery in their home due to concerns about their children's psychological well-being.
Step-by-step explanation:
When Aunt Daisy and George went down to the G deck, they did not find Phoebe, as this scene does not pertain to that particular narrative.
However, based on a relevant textual excerpt, we can discuss what George Hadley found in his home's virtual reality nursery in another storyline.
George and his wife Lydia discovered a bloody scarf that belonged to Lydia in the scene where they decide to shut off the nursery.
This occurs after they recognize the unhealthy obsession their children have developed with the nursery's African veldt environment, which seems to materialize their subconscious thoughts and fears.
The discovery of the scarf and the subsequent turning off of the nursery reveal the deep-seated issues that the Hadley family faces with their children's psychological state and the impacts of technology on familial relationships.
The virtual reality environment had read the children's thoughts and brought forth a dangerous level of realism.
The parents' decision to shut off the nursery serves as a critical turning point in confronting these issues.