I've never banned books nor do I believe in banning books. At 13, my daughter was reading Colleen Hoover and other romance books. My policy was: read whatever you wanted and let's talk about things you didn't understand.

When I was that age, I read everything I could get my hands on and I read pretty much every Stephen King book that he published back in the 80s! Didn't quite get a lot of concepts in his books as I was young but I read them anyway...and I'm fine. I do think at that age, they're fully capable of knowing what books they want to read.