Lucy West

 is a resident of Megaton in 2277.

Background
Lucy was born in Arefu in 2252.

Other interactions
Lucy is a permanent resident of Megaton whom you can talk to around town whenever you wish.

Quest: Blood Ties
She asks you to deliver a message to her family in Arefu. This leads to the discovery of her parents' bodies and her brother's vampiric condition.

Quotes

 * "I heard about your little killing spree in Arefu. Get the hell away from me!"

Appearances
appears only in Fallout 3.

Behind the scenes

 * Her name may be a reference to the character Lucy Westenra from the novel Dracula.

Bugs

 * Like all other Megaton characters, Lucy West might go missing or turn up dead. See Recovering missing NPC in Fallout 3 on how to resolve this issue.
 * She will sometimes say "I heard about your little killing Spree in Arefu, get away from me!" after completing Blood Ties, even though no vampires or residents of Arefu were harmed. (Confirmed Xbox 360, PC and PS3)
 * To remove the quest item "Lucy's Sealed Envelope" on PC, type "player.removeitem 0001890a 1" into the console.
 * Even after telling Lucy that you've found Ian, she sometimes keeps imploring you to find him. If you tell her you've found him before telling her you delivered the letter, she might not let you tell her about her parents--and will still ask for you to find Ian.