Oops sorry for the typo, I meant she should go for a surgical treatment. Since I too am from India, I think I can even suggest the right place to you
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And if already enough time has passed since you observed this problem, I think searching over the net for options will only confuse you. I live in Mumbai, and here my friend went for a treatment at Advanced Hair Studio, he was pretty impressed with the services. They probably have branches in Delhi too. But then it is your decision to finally choose the best surgeon. I would anyway suggest you to go there and get an advice from the team of doctors.