Her brow furrows. It's not so unusual for someone to stop by for Aziraphale without knowing much about her - it's happened before, like when she first met Bee. But he'd stumbled over Aziraphale's name, and he's having no such trouble with hers. If he doesn't know the angel that well, who told him about her presence here? Her friends in the building know she's meant to be a secret.

"Who are you?" she asks, suspicion creeping into her tone. "Who told you about me?"