THE mother of the latest child adopted by Angelina Jolie is a money-hungry heroin addict who NEVER signed the papers to give up her son. And unmarried Vietnamese pauper Pham Thu Dung, 29, may even demand they give the boy BACK. Angelina, 31 — who has two other adopted chidren and one of her own — picked up the three-year-old boy from an orphanage in Ho Chi Minh city 10 days ago and called him Pax Thien, which means Peaceful Verse. But the adoption papers were signed by his grandparents and may not be legal if the mother contests them. The child’s grandad Chien, 55, revealed: “Our daughter is a heroin addict and she is a bag of trouble. Her life has been ruled by drugs since she was 16. And granny Nhan, 51, added: “We are delighted he has gone to such a wonderful home. But my daughter is very smart — and she is also very stubborn, wayward and difficult.” Speaking at their rundown home in a poor suburb of Ho Chi Minh City, Chien, a former oil tanker skipper, told how his daughter became pregnant after an affair with a married man at the garment factory where she worked. Her father Chien said: “We have already lost too much money because of her drug habit. She always wants money but it is us who have to pay it back. She doesn’t care that we live on a £15-a-month pension, can only afford to eat once a day and have five children to support as well as my wife’s mother who is 101. Bad girl! Oh gosh, Pax Thien has only started to cozy up to his other siblings, Maddox and Zahara..Just look at these two pictures. Aren’t they lovely?

Pax Thien is Tomb Raider star Angelina’s fourth child. She adopted her eldest son Maddox, five, from Cambodia and her daughter Zahara, two, from Ethiopia. She also gave birth to her own daughter, Shiloh, with film hunk Brad Pitt, 43, last year. Angelina instantly fell in love with the lad when she visited the orphanage with Brad last November. The shy little lad was the only child not to rush forwards and vie for her attention.