No, that can't be it. I've seen her angry when she loses - she didn't... um. What's the term? "Rage quit"? If she didn't throw anything, I don't think she was that mad.

[At least the line is moving steadily. Though, strangely enough, occasionally there seem to be more people going in than coming out. It isn't long until the two of them are the next to be seated.]

I guess she was just bored after she finally got a chance to play.