Ask her how long she's been here.
From Create Your Own Story
"How long have you been hole up here?" You ask.
"Not very long," she says, settling down on the floor with the gun in her lap. She pulls a pack of cigarettes from her hoodie pocket and lights one up. "All this shit just started tonight. I grabbed everything I could, stole a car, and came here. Figured the vault would be pretty safe."
"Aren't these airtight?" You ask, looking around, suddenly worrying about suffocating.
"This old piece of shit?" She asks with a laugh. "Hell no. Maybe all those high tech ones the government has, but you close the door on this bitch and you can still feel a breeze from around it. Nah. We good."
