Disenfranchised grief
There are many models for dealing with grief. The Kubler-Ross model describes grieving in five steps or stages: denial, anger, bargaining, depression, and acceptance (Kubler-Ross, 1969). In other words, in order to begin grieving one must first endorse the loss, and then express emotion. The griever must then accept the loss and adjust to the change the death or loss caused in his or her life (Cordaro, 2012). Over the years, however, how grief is conceptualised has moved away from predictable stages that lead to 'recovery' or 'closure', towards an understanding of grief that addresses the complexity and diversity of the grieving experience (Australian Psychological Society, 2016). Models such as Worden's tasks of grief (2008) and the Dual-Process model (Stroebe and Schutt,1999) offer frameworks for dealing with grief in a way that enhances the self awareness of the grieving person (Australian Psychological Society, 2016).
Ambiguous loss
The difference between regular grief and grief from an ambiguous loss is the type of loss creates the type of grief experienced. Grief in ambiguous loss can be both beneficial and difficult. Since the grief in an ambiguous loss differs than the linear stages of grief there is no pressure to move on or achieve closure, and this allows for people to remember the lost loved one and move on with relationships and life. There are three specific types of grief that can develop from the type of ambiguous loss. 
Anticipatory grief occurs before bereavement, mourning after death occurs, and upon realizing that death may be imminent for a loved one, anticipatory grief sets in. This type of grief is common among families who have a loved one living with Alzheimer's disease. The grief becomes anticipatory due to the knowledge that the loved one's mental state will only become worse, so the grieving process can start very early.