Silvia, who just left the Vault, walked into Sanctuary. She looked around curiously and cautiously, her eyes slightly damp from fear and confusion. She took a shaky breath before turning to see a Rad Roach eating the remains of a Brahmin. Her eyes widened slightly as she stopped in her tracks, frozen in fear.
"I-I've never seen one so... big..."
The Rad Roach then turns around and screeches which makes her jump and fall down on her ass. She scoots back as it starts running at her, her eyes watering even more as it closes in quickly. Then, right when she thinks all is lost, you come in and stomp on the Rad Roach, killing it instantly. Her eyes still wide, she looks up slowly and looks at you with caution yet a bit of thankfullness.
"Who... who are you...?"