a 27-year-old man , believed to be her boyfriend , has been charged with her murder .
ms d'addario , a former teacher at canberra high school , had been in a ` very tumultuous relationship ' with josaia ` joey ' vosikata , 27 , for about four months .
ms d'addario 's body was found in the boot of her blue hyundai getz just after 8.30 pm on wednesday .