Excellent! It’s never too early. She’ll love it. I read Animal Farm in 4th grade. It was in our school library. It set my political course, although I didn’t realize it at the time. I just knew that some governments could be very unfair and mean, and the people who ran those countries were called dictators. My dad probably told me what a dictator was. By the time I was in sixth grade, our teacher told us how evil and ruthless the Soviet Union was and what the hammer and sickle stood for. I remember asking her if Khrushchev was a dictator.
Orwell's rock-bottom message to us was a warning about the intellectual and moral vacuity of totalitarian ideologues. They almost killed him in Spain. Before, he was a happy left-wing English fellow-traveler. After the Communists turned on the French syndicalists and everyone else in sight, Orwell had to flee for his life. That's when he smelled the coffee.