This can be a learning experience for her in a very special way. If it were my daughter I would tell her, "I do want you to read this book. I want you to read it and love it the way I did. However, I would rather you wait to read it when you are a bit older but I will not stop you."
Best case, she will put the book down and walk away.
Worst case, she reads it-falls apart-you're able to give her a gentle "I done told you!" and she maybe learns that you really are in her corner with recommendations.
It's a tough situation!
