walters , who was also badly hurt in the incident , was charged with his wife 's murder two months later .
walters , who was also badly hurt in the incident , was charged with his wife of two years after their relationship had collapsed because she was no longer able to satisfy his sexual demands .
the 51-year-old 's mitsubishi l200 animal ploughed through undergrowth before hitting a tree .
she was flown to hospital by helicopter but died two days after the crash in march last year .