CALCUTTA - Sisters of Mother Teresa's Missionaries of Charity order will arrive in Calcutta this week to decide if the 86 year old ailing nun should stay as head of the order she founded 50 years ago. Father Edward le Joly, a spiritual adviser to the order, said the fragile missionary would be forced to relinquish her leadership of the order. "She is in very bad condition. There is no other choice", he said.