My daughter is exactly the same lol, and she's 6. She has a lot of hair too, so I tend to think it's the same issue where the under layers stay wet longer and the top dries faster. I haven't really tried to do anything about it yet.
2a/b, high porosity, fine strands, average density, just about shoulder blade length
My hair loves moisture!
currently mod-cg , using low-poo and not totally cone-free yet. I'll get there though!