My wife went to Catholic school and between the nuns and her strict mother, she was turned off from reading forever. Instead she watches garbage on television.
I was blessed in that I had complete freedom as a child with respect to reading material. If I had a book in my hand, my mother was happy. Yes, I was exposed to some "inappropriate" content from time to time but all that did was help me become a more discriminate reader.
I pretty much had complete freedom also but I wish I had not spent so much time reading junk. I could have used more guidance from my elders.
Maybe the nuns were too strict with your wife...it’s certainly good to have some freedom to read what you like. But too much freedom can end up badly as well.