I am sorry for Mirai, but I think her placement was correct. The UR calls shouldn't have been a surprise to anyone, least of all her. She's been getting called on URs consistently throughout this season, last season, and really much of her career. Almost the bigger problem, to me, is the near-complete loss of any joy or emotion in her skating. She performed that long program like a robot. Yes, I know she was sick. But come on. This is Nationals. Pull it together (or withdraw). Just look at Richard Dornbush--he also was sick recently, but still managed to put out a quite decent performance in the long and didn't check out of his music and program the way Mirai did.
And, sorry to say, I cannot really sympathize with her reaction in the kiss 'n cry. You know the cameras will be on you when you're in the K&C at Nationals. It's just the way it is. You have to be prepared, for both the good and the bad. Mirai just let herself get carried away--as she has before--and I have to admit I felt for her coaches, having to drag her off before it got any worse.