I use the strategy when reading aloud of intentionally getting words wrong. Start with a familiar book that she has practically memorized anyway, and let her "correct" you a bunch of times. Then do it again with a less familiar book, and a less familiar book, until you are doing it with a book you've never read before. Once she is used to the "correct poor confused Mama" game, she may forget that she had claimed not to know those words you're getting wrong.