I was in the exact same position as your daughter. I am also an Indian girl and started growing dark hairs on the facial area, legs, and arms at the age of 6. Facial and arms being the worst.
Like you have probably read in most of these forums, the best solution is shaving, especially for someone so young. I'm glad to see you're giving her lots of support, she really needs it right now
I've gone through the comments. They're very immature comments. The good news is they are kids and will grow up and realize their immaturity, the bad news is your daughter is at such a fragile stage in her life.
Definitely get her checked out for hormone imbalances, it's something I never did and I know I should. In the meantime, look at methods like shaving. When she gets older, electrolysis may boost her self-confidence. It is something I will be looking at once I earn my degree and earn enough money to pay for it.
Best of luck to you and your daughter.