It's been done before. And while, yes, it will take a bit more energy, the time on her job (the actual performance) is only a few hours a day. During previews, they rehearse during the day and perform at night. Really, no difference here.
And to the rest? Oy. LOTS of wonderful performances in her category.
If we're not having fun, then why are we doing it?
These are DISCUSSION boards, not mutual admiration boards. Discussion only occurs when we are willing to hear what others are thinking, regardless of whether it is alignment to our own thoughts.