The accused killer, named only as Brigitte W., had bickered with her 77-year-old friend Petra B. when the ice creams they had bought on a shopping trip melted on the way home.
The British model, 36, has three children with her ex-husband James Stunt - two twin boys, nine, and a daughter, 11 - as well as a girl, four, with new partner, businessman Sam Palmer.
Petra Nemcova, the now 45-year-old Czech model who miraculously survived catastrophic tsunami, described how she survived for nearly eight hours despite a crushed pelvis.