[ She picks up the bottle but doesn't move to drink from it. She doesn't tend to drink around other people, or even much at all. But he offered it to her, and she'll at least hold it to show willing. Or maybe just long enough for him to let his guard down so she can throw it at his head. ]

I almost believe you, but only because that sounds too stupid to be some kind of cover story trick. Why did I become a superhero cop?