"Good kitty" Vincent says as he scratched her chin. He reaches into his haversack to get the 20 gold. Paying the kitty upfront, he turns to Aria and says "There now this pretty kitty is our for the night, and you can do with her as we please." Aria seem to be getting tipsy and haven't even finished her first drink. For being a demon she really can't drink like one. While he waited for Aria to finish he petted the kitty on his a lap some more. Putting a hand on her tummy, he gave the kitty a nice belly rub.