The top two throwers, Amber Campbell of Nike and Amanda Bingson of Nevada-Las Vegas both had best throws of 235-6, but Campbell's metric measurement, 71.80m, was .02 ahead of Bingson's to claim the national title.
Meanwhile, Henry advanced to the final round and eventually finished ninth with a best throw of 224-7/68.47m.
"Early on I felt the speed and technique, but in order to be successful as an elite athlete, you need the mental side of the game," said Henry. "I thought I was going hard, and it just wasn't going anywhere."
In the men's competition, Kibwe Johnson of Nike won with a best throw of 245-11/74.97m.
Former Duck Brian Richotte took 17th with a mark of 217-6/66.30m.
The Oregon Track Club's Lucias MacKay made the final and placed ninth with a throw of 225-11/68.87m.
"I believe all of us would love to be on the infield competing with everyone else but this was awesome, being highlighted at a venue like this," said MacKay. "I knew if Nike put their name on anything it would be great.
"The next USA (meet) that is in Eugene, we want our trials to be here in Beaverton again!"