Yes, all south asian countries were once called Bharat Barsha (It wasn't a big country named Bharat, it comprised of a lot of small countries). And the languages in this region came from Sanskrit. But Sanskrit didn't come from India, it came from Bharat Barsha (thus Nepal, now Pakistan, Afganistan, SriLanka all are where Sanskrit was born). Nepal was never a part of India or Bharat. It was a part of Bhrat Barsha. So, if we can say Nepal come from India, we can also put India came form Nepal. Anyways, as put by highfly, India's policies towards its neighbor in recent years are not what a neighboring country should have towards its landlocked friend.