This higher authority may be the God of your religion or it may be with someone like a doctor. We think that magically the person may come back to us if we only offer up the right fee. I will be a better person, God, if you let Peter come back home to me. There is a stage where anger takes hold as the unfairness smothers the grieving person. We think of anger as bad or wrong or something that we must overcome.
Anger is just an emotion just as viable as happiness, sadness, joy, and excitement.
It is not the emotion anger that is bad . Because people over the centuries have stated that anger is sinful or bad or wrong, we forget to teach people how to deal appropriately with anger. Voicing ones anger and expressing said anger without violence is a healthy approach to deal with the emotion. Exercise, meditation, yoga, and martial arts are common methods for dealing with anger. The stage of depression is commonly what most people call grief whereas the other stages are sometimes overlooked.