Alric's smile, although still politely restrained, brightens at that laugh.

"..ah.. a most flattering invitation. Lady Sansa, then, if you wish."

He was perfectly happy to call her by her name if she so wished, but he wasn't about to abandon his manners entirely, and offered a courtly bow. It was more than worth overplaying the role a bit, so long as she was enjoying it; in truth, she rather seemed like she could do with some enjoyment.