DD is 10.
She is at the age where she'd rather shower or bath in privacy. Absolutely fine. I respect that.
But she is rubbish at washing her hair! She leaves tons of soap on afterwards or doesn't condition properly (as I've showed her so many times) so it's just like a tangled birds nest at the back. We keep it shorter than she'd like because of this (just above collarbone).
It always looks a bit greasy because of it.
AIBU to think that a 10 year old should be pretty competent at washing her own hair? Especially when she is able to do things like Loom bands pretty well?