Hair study. I see Sofi's hair as having a bit of kink to it, if only because she wears it in headscarves all the time.
Something I did want to emphasize is that she doesn't uphold orthodox Jewish traditions because she feels obligated to. She keeps kosher because it's a dietary preference. She doesn't like pork, she doesn't like her dairy and meats to touch, etc. She dresses modestly because she feels comfortable. She wears skirts for the same reason. (And she hates shorts and pants because they pinch her tuchas.
wink And she wears the headscarves because she likes them. Not because she feels obligated to. And as shown in the two headshots, she will take it off in situations where they're apt to become dirty and sweaty, or in formal occasions where a headscarf might clash with her wardrobe. (Nothing wrong with hairNETS, though!)
PS: In that formalwear headshot, she looks disturbingly like Melody. HMMM.