I too love when hair physics are on point. I know it's more difficult than drawing hands and feet but my own hair is longer than that so I only have it down at home.
We're missing panels of her touching it every few minutes as they walk to keep it from tangling and holding it out of her way just before she sits down so she isn't pulling on it. I don't care what pricey Suave products she's using; hair has its own personality after a certain length and it's equivalent to a toddler.
I've only seen one person in my entire life with hair that long down at the gym and for the life of me, I had no idea how all that bouncing never turned it into a big, huge knot. It's so pretty to look at in motion but the aftermath can be brutal.

BIN IS SO PRETTY!! like the name princess really suits her, yall seen that panel where she was sitting and her hair just flowed behind her I LOVEEE.