Crowley has to stifle a laugh at corresponding via email, it's a miracle Aziraphale's computer can access the internet at all. Actually a miracle. Possibly several.

But she can tease her angel (hers, hers, hers, and she feels all melty inside when he introduces her as his partner) later. For now Crowley holds out a hand to be politely clasped. "Merope, hmm?" She grins. "One of my favourite stars, that one. Crowley."

She does that a lot, when giving her name. Like Bond, James Bond, which Ian Fleming absolutely stole from her, except with just the Crowley. She might not have to put up a front for Hell anymore but there's still such a thing as style.