When I was younger than your daughter, I asked my dad (while we were standing outside at night before getting ready to get into the car to go to meeting) 'Daddy, what is the moon made out of?' I sincerely wanted to know. He looked at the moon, then looked down at me and replied, 'Blue cheese'.
That was when I knew my father was s-t-u-p-i-d. lol I would much rather he took the time and told me something worth while and professional, even though it would have been over my head at the moment.
My belief is that your daughter will not forget the sincere questions she asks and your doubly sincere answers that you give her that no one else will.
You are doing a wonderful job trying to gently get her to think and reason. As a born in myself, I wish I had had a father like you.
All the best to you and your little family!
LL