"In that case, I could use your help. Do you know of a good way to keep staff away from the table long enough for me to stir this in? Somehow I doubt it will be easy to just walk up and do that without notice..."

It may be a bad idea to do this. She had only arrived recently and it may not be the best idea to ruin her and all the Starfallen's reputations by pulling a stunt like this. But high-society parties were always so boring, and if she used enough they wouldn't remember it anyway. That's the excuse she's going with, at least.