I noticed that she seemed to be following Perry around the event, if not in person, then with her eyes. She notice when he arrived, watched who he spoke to, and, I think, was the one who watched him 'steal' the alcohol at the bar. It was like she knew something was off about him (more than normal, maybe) and wanted to see what he was up to - she also followed him down to where all the other women were (meaning, she wasn't looking for the women, she was specifically following him)