Oh I didn't mean that in a disrepectful tone. I can take her word for it that it's normal. I believe she believes that and that the science she brings forth fits in with her belief.
When discussing this particular issue, it doesn't matter to me whether it is normal or not. I see a ton of normal behavior in children that I don't like. I see normal behavior in adults I don't like too. So at my house I decide what normal I will host and what normal I won't host. I decide whether I provide the service to host every aspect of normal within the child and adult population I serve. My roof my rules.