I find that one doesn't get information just by standing around and talking. In a ball situation it's best to blend in, do things others do and gather information that way.

[She had gone to pick up a simple drink, thankfully non alcoholic, which was rare and took a sip.]

I find there are also certain types who are much easier to do such a thing than others. Just keep your eyes open. [She knows who in her mind would be the best option. One who won't recall it the next day.]