I suppose that Shizu gets partial credit for not playing into any of those rons. But, considering that Awai is a bit fixated on Shindouji and she could choose who she rons, I'm hardly impressed.
Then, we also add the fact that Shizu knows when Himeko is going to win and its no wonder Shizu isn't going to be directly hit. But, as I've said, its not the most amazing feat considering all Shizu has to do is bail when Himeko has a key and not call Awai's attention to herself.