[ She offers a sort of unreadable smile. It might be apologetic, her way of expressing contrition for the misunderstanding. It might mean something else. ]

Not today. [ Does she mean 'I'm not acting suspicious today' or 'you didn't run across someone suspicious today?' Hmmm... ]

Technically, you can't. You'll have to pick the lock first to see if the chain is on the door. [ ... ] Which I wasn't planning on doing, by the way.