I don't know when so you can skip the rest of this, but I had fine skinny hair I guess and my sister had long thick blonde hair all of the time. My mother always made me get my hair cut short, very short, very ugly and told me it was because my hair was so fine. The worst was when I was in highschool and all of the girls had long hair. I look at highschool pictures and there about two of us with short, ugly haircuts. Not even anything cute. So now in spite of the fact that I am way past when I am supposed to have long hair (although I guess the trend is changing) I wear long hair in my fifties. My point is: no matter what kind of hair she has, let her where it long or short if it gives her confidence. And if it appears oily, there are so many different kinds of shampoos and conditioners now even from just a few years ago. It is not superficial. Hair is attached to our bodies and we are who we are and we all want to look nice. (Well most of us). Hug her for us.