No one touches my hair- I go to hairdresser only like once a year- get a really short cut (look stupid) and let it grow.
I'm white (too white for my taste:-(, have thick, curly blond hair and some ppl would like to touch them (when I was a kid they did it even without asking). Maybe that's why I hate it so much... IDK
Surely you can ask but, as many had already said, be prepared that she'll say no. I think most ppl (throughout all races and nationalities) would dislike others touching their hair.