I saw hand motions in at least three places, mostly one-handed. The most obvious was when she waved both hands for them to stand up and applaud themselves. They had already done so, but maybe it made her feel as though she were still in charge.
Groupthink in action.
She probably had all of them informed what the signals were but I bet there were a couple followers signaling the group, like a third base coach. My wife and I could be wrong, but I don’t think so. Never underestimate the enemy. Nasty had her people in line.