A woman has been charged with manslaughter over a crash with an ambulance that killed an 87-year-old patient inside the St John vehicle. The crash in Dianella last week caused the ambulance to roll on its side and an 87-year-old woman who was inside died in hospital three days later. A 24-year-old female passenger in the driver’s small car also suffered serious injuries. The 30-year-old woman was initially charged with two counts of dangerous driving occasioning grievous bodily harm but one of those counts was upgraded to manslaughter on Tuesday. She has also been charged with no authority to drive and is due to appear in the Perth Magistrates Court today.