Chairman Joe Trapp called for a Motion to Adjourn. It was made (Washington) and seconded (Scott). When the vote was called for, here's what happened during the hand vote.
Six trustees voted Yes.
Chairman Trapp noticed that Trustee Washington hadn't voted. She was busy packing up and getting ready to leave. When he inquired, she raised her left hand.
Here is another way it could have gone.
Chair: "We'll take a hand vote. All in favor, raise your right hands." (6)
"All opposed?" (none)
"Have all voted who wish to vote?" (no response)
"The vote is 6 Yes, 0 No, 1 Not Voting. The meeting is adjourned."