[quote=Mistress Dizzy]
Not sure how Jin would fit in there, unless they plant her as part of the waitstaff. She has no idea how to be fancy, you might as well as her to speak French.
[/quote]

Oh my god!!!
She'd be awesome in the wait staff. 
Pick pocketing would be easy for her and very helpful!
She'd also have it in to create distractions between messing up staff orders and causing conflict between people by maybe moving items from some person to another that could cause distrust in the society.
This is an idea for a reason for everyone to leave the party without a group vanishing for some reason; she could start a fire in the kitchen which would cause the party as a need to evacuate!
A reason for everyone to leave.