I think it is the intensity trait of the gifted or highly gifted person. It does sound normal and familiar to me. Also, there is a topic in the subject of giftedness about asynchronous development. Reading all about that topic is very helpful. It is so great that you really want to listen to and understand your child. That kind of unconditional love is comforting. I was just reading about how a young Bill Gates, Jr. had a grandmother who would be around for him for company when he would take a break from his voracious reading. I want to keep my response short in accordance with guidelines, but what you have noticed is right on point with the list of gifted characteristics, which I think you can find at the Hoagies website.