I don't think that choreography & score can be flawed. They are what they are. There CAN be something wrong with the book, but score & choreography are on their own. They don't rely heavily on what happened previously. I hope that made sense.
I cannot see her playing it and i think she is way to inexperienced for it. As compared to the countless actresses who have played both roles straight out of college? Anneliese is many things but inexperienced is not one of them. She played Eva in Evita at 15 in a professional production for god sakes.