Mr Kerry said Kate wanted to spend more time practising with the team but felt she had to cut short the visit as crowds began gathering to watch her.
“I think she wanted to have a bit more of a knock-around,” he said. “She has got a good eye for the ball.”
Team GB’s women came sixth at the 2008 Olympics in Beijing but hope home support will help them win a medal. Their first match is against Japan, at 7pm on Sunday.