US national Heather Mack, convicted as a pregnant teenager of helping to kill her mother at an Indonesian luxury hotel, was being deported on Tuesday along with her now six-year-old daughter, immigration officials said.Mack, 25, was released from a Bali prison last week, nearly three years early for good behaviour, and was set to be flown to the United States on Tuesday.“Yes, it’s true. [She’s] got the ticket already,” Bali justice ministry spokesman I Putu Surya Dharma told reporters when…