Yes, I have read all the books at the end in French - although I had bad problems at the beginning. The first hundred pages I have more over hand me a few words and the known story along, but it quickly became better. At the end, on the one hand the joy of having experienced the story once more completely, on the other hand the success, to have finally made friends with the French language. Many school years we were disposed to us only hostile, now we have found each other - thanks Duolingo and Harry Potter might say: D