Kris - Deann Sharpley and seven - year - old son were found dead on Monday . Ms ##ley was heavily pregnant with second child when killed . ' Everything was fine ' , says friend who spoke to her hours before murder . Planned to name daughter in honour of her mother , who died years ago . Her infant daughter was also found at the manor house , near Brisbane . Detective Inspector David Isherwood said the child had a history of criminal behaviour and mental health issues . The child 's cause of death remains unknown as initial pathology results were unclear , but death and strangulation are still being investigated .
Kris-Deann Sharpley and seven-year-old son were found dead on Monday . Ms Sharpley was heavily pregnant with second child when killed . 'Everything was fine ' , says friend who spoke to her hours before murder . Planned to name daughter in honour of her mother , who died years ago . Her father Derek was also found at the Biddeston house , near Brisbane . Detective Inspector David Isherwood said the grandfather had a history of criminal behaviour and mental health issues . The child 's cause of death remains unknown as initial pathology results were unclear , but suffocation and strangulation are still being investigated .