It's probably to do with her hair just changing as she matures but I've noticed that dd's hair has halved in thickness from this time last year. It's also changed texture slightly. At the longer parts (it's very long!) it looks now really very fine. It used to be quite a full abundant mane.
I'm thinking we'll get it cut to a chin-length bob so it looks a bit better.
Just wanted to (neurotically) check that it's not a sign of any kind of illness.