She wasn’t perfect. She definitely flubbed some lines in the first act. And in the end of the second she got emotional and her voice broke a few times. But she never broke character. Somehow, it made it more emotional and powerful. Richard Rodgers has such a small stage, is so intimate; you were right there with every turn of the book.
Even the dudebro there with his Nana got very still during act 2. He may have even sniffled a few times.