“…Kubler-Ross [31] describes a five-stage model of grief and bereavement that includes denial, anger, bargaining, depression and acceptance. Extreme grief reactions include depression, anxiety and post-traumatic stress disorder which can influence the length of the bereavement process, making it longer with a slower recovery period [8,11,12,32,33]. However, human behaviour such as grieving is a dynamic process, and, often attempts to model human behaviour fails because most models fail to account for temporal changes and dynamics in behaviour [34].…”