THE news came as a shock to Congress president Sitaram Kesri. On May 7, Choudhary Prem Singh, Delhi party chief, informed him that 'Madam' had enrolled as a member of the Congress. True, the development had to be welcomed, but what hurt Kesri was the secrecy: Sonia Gandhi had filled up the form for primary membership more than a month-and-a-half ago, March 21 to be precise. Singh told the veteran leader that he had kept quiet about it because Sonia had told him specifically not to publicise the matter.