You know, it was her moment and she did it how she felt comfortable. So what if the dress wasn't the right size, or if she hacked into the mic, get over it, I am sure that last thing she was thinking about after wining a Tony, was, oh I should excuse myself.
Congrats to Sara, she deserves it.
In the words of Mr. William Morris Barfee, "In my whole life I have only been able to breathe through one nostril and today is no exception!"