Emily cocked her head. Alex had a point, even of she wasn't the culprit she'd be the first and easiest to blame. "I'm sure I'd know if I broke them in a drunken rage, don't you think? Or maybe I wouldn't but if I was that drunk I wouldn't consider myself accountable," she replied calmly, smoothly, hiding any panic from her voice. Well, the lack of panic, Emily didn't really care if he found out, this was a game to her, a test of her deception skills. 
[I]'Could be a test off your seduction skills'[/I] toyed the part of her mind she usually listened to but she left it for now. 

She shoved the cork back into the bottle. "I mean, half of us 'ave dogs and shit anyway, who's to say a person did it?" She points out. "Now, are you done playing detective with me? 'Cus I have a heist t' prepare for," she says, continuing the calm composure. Honestly, part of her was done with talking about the stupid cups but part of her was finding this rather entertaining. Sure, it doesn't seem like a very engaging game but stuck stranded from most of the outside world one of Emily's favourite 'activities' was not really available unless both parties wanted to ensue all the awkwardness until one left the gang and she was running out of resources for her other favourite activity (yet still drank from her supply as if she had lots to spare) so she liked to resort to another activity she enjoyed, messing with people.