When the estate was attacked by machines, her father locked her in a room to protect her, before being subsequently killed by the machines.
She was found and released by Aloy, who was investigating the machine attacks on the estate. Before releasing her, Aloy had found and destroyed a Machine Lure on the grounds which was attracting them. When Aloy told her that her brother Ranaman asked her to do this, she informed Aloy that Ranaman had been disowned and cast out of the family by their father for being a greedy, murderous criminal. This made Aloy realize that Ranaman had planted the lure to kill Daradi, their father, and everyone else on the estate to claim it as the sole heir.
Ranaman appeared with another lure and smugly promised death to her and Aloy by the machines. However, one of those same machines killed him, destroying the new lure in the process. Daradi again took refuge in the house while Aloy successfully killed the machines.