Kanimozhi was DMK chief M Karunanidhi’s favourite child — among his six children from three wives. “She brought me luck,” he would say — because he became chief minister of Tamil Nadu a year after she was born.  But on Friday, as his 43-year-old daughter was led to Delhi’s Tihar Jail, Karunanidhi, 87, could hardly say anything. Once the daughter who brought luck to her father, Kanimozhi’s metamorphosis as the harbinger of the DMK’s downfall seemed complete, believe many party leaders who also feel sorry for the patriarch.