MUMBAI: Vidya Balan is flattered. Sources say R Balki told her that when he was writing the role of Auro’s mother in Paa he had only Vidya in mind. Likewise when Abhishek Chaubey was writing Ishqiya he had Her and only her in mind too. Must say Vidya is one of the chosen few. For the rest of the actress brigade, film-makers usually say that They are highly interchangeable. Yeh nahin toh woh sahi. With Vidya it is not like that.