A US man and his teenage girlfriend were given long jail terms yesterday for the "sadistic" murder of her mother after a heated altercations, whose body was found stuffed in a suitcase outside a luxury hotel on Indonesia's Bali island. Tommy Schaefer, 21, was found guilty of the premeditated murder of Sheila von Wiese Mack and jailed for 18 years. His girlfriend and the victim's daughter, 19-year-old Heather Mackwas found guilty of assisting in the murder and given a 10-year prison term.