Anger that your loved one has died and left you alone, or anger with caregivers for not being able to do more. The feelings of anger can be very strong even when there is not one or thing to blame for the death itself. This is normal too. It's important to be able to admit that the feelings exist and to be able to express the anger in some way. This can be by talking about your anger with family or friends, or even by writing about it in a journal or letter.
Some people express their anger physically, by hitting pillows or by yelling.
Expressing and releasing your anger can help you through the healing process. Bottling up those feelings instead of dealing with them can only prolong your pain and keep you from moving through your grief. At this time, the grieving person has worked through the first two stages and those feelings of shock, denial, anger, guilt and deep sadness, and is coming to terms with the loss. Memories of the loved one and sadness due to the loss will always be there, but the grief will lessen and there is the realization that life does go on. Time alone does not heal grief, but letting yourself cry and talking with people when you need to will help you in dealing with your grief throughout this time.