If one speaks to her after visiting Arefu but before finding her brother, you can inform her what happened to her parents, and she will ask you to find him for her. If you complete the Blood Ties quest you no longer have the ability to inform her on what's happened with her family.
She seems to have an attraction to the player character, as after finishing dialogue with her she requests the Lone Wanderer see her when visiting Megaton.
During the Blood Ties quest, one can extort 100 caps from Lucy after discovering the fate of her parents in Arefu. You must have the Scoundrel perk in order for this check to appear.
Lucy's name is a possible reference to the character Lucy Westenra from Bram Stoker's Dracula. They both have connections to vampires, and they were the first victims of a chain of unfortunate events that affect their loved ones.
Bugs[]
Has platform::Playstation 3 Like all other Fallout 3 NPCs, Lucy West might go missing or turn up dead. See recovering missing NPC in Fallout 3 on how to resolve this issue. [已验证]
Has platform::PC She will sometimes say "I heard about your little killing spree in Arefu. Get the hell away from me!" after completing Blood Ties, even though no residents of Arefu were harmed. [已验证]