I think her hair is very pretty, but I have two issues:
Firstly, she never changes it. Like, never. It's the same as it was when she was a teen. If I were her I'd be dying to try something a bit different - even a few inches shorter and she could achieve some actual volume at the top!
And secondly, I think because she's so short, the very long hair drags her down. I can't explain it well but it's like the proportions are off: when I see a full-length photo of her, the hair isn't at the right level for my eyes to know where to rest
so she looks like a little girl playing dress-up rather than a grown-ass woman!
I'd love to see her with a long bob - it would look cool and sharp straight and sleek, or she could add lots of volume and big waves, or - shock horror - work with her natural hair texture! I feel like she never ties her hair back unless she's exercising or doing skincare because she thinks she looks like a child without the big curtains of hair. I'd challenge that by saying a shorter cut would frame her face better and make her look more mature.
(Wow, I seem to feel more strongly about Retro's hair than I do about my own mop!)