From that picture, I'd be inclined to say that her hair is more 2b/2c.
I don't know much about 2b/2c hair from experience, but here's what I can tell you based on the women on this site:
She'll most likely want to have a low-poo, RO, LI and styler. For low-poos, most wavies love the shea moisture shampoos (particularly sm moisture retention). Tresemme is loved by 2's all the way to 4's and would double as a great rinse out and leave in. kinky curly knot today is also a great leave in for all wavies/curlies/kinkies!
Since her hair is fine, some light oils to try are jojoba oil and grapeseed oil.
Not sure about stylers! Sorry!