Britain were on level terms with their illustrious opponents until late in the fourth quarter. Grady said afterwards that she thought GB deserved the win.
"I guess you could say the best team won but I think personally we were the better team," Grady said. "It was a tough game; it was a good game.
"We wanted to play as hard as we can for 40 minutes, and I think we've shown that. Thank you everyone for your support."
The result means that Britain will not get the chance to compete for a medal.