I talked with her about how I view the temple ordinances as almost completely symbolic - and that there is great power for me in the symbolism and figurative nature of turning our hearts to our fathers and serving them in a symbolic way. I asked her if she understood what I mean by the difference between viewing ordinances as symbolic and thinking they are literally necessary as we currently perform them, and she said the following - to the best of my recollection:
It's like the Jews using circumcision and us using baptism now. That symbolism worked for them, but it doesn't work for us. Baptism works better.
She then added:
It's like when kids at school think we worship Joseph Smith because we sing "Praise to the Man". They only use "praise" as a religious term when they are talking about God, so they assume we don't worship God when we praise prophets. They just don't understand that it's ok to praise people for what they do and worship God. It's the meaning of the word to us that's important - the symbolism we see in it.
She's a great kid, and I'm proud of her. I'm not certain I've ever shared those examples with her directly, but they are two specific examples I have used in the past.
I'm glad she understands the concept of symbolism at this age, since I believe it will help her tremendously as she gets older and faces other things that often are difficult to reconcile in a more literal paradigm but have great power when viewed symbolically.