Teenage Religious Rebellion
I have found a book in English translated by Maulana Wahiduddin Khan titled Religion and the Modern Challenge (Mazhab aur Jadeed Challenge). It is a very popular book that addresses atheism and modern doubts in a rational way. You should read it; it will be helpful. You can also find this book and other helpful resources through CPS International.
Please continue praying for your child, because a parent’s prayer is accepted quickly. A child who questions everything is actually a good child, because she does not accept things blindly but wants to understand and adopt them thoughtfully. You are a very caring and wise mother for trying to support your child through knowledge and understanding. Please remember me in your prayers as well. A questioning mind is a blessing, if it is not allowed to become a burden.