James Ryle writes about how one minister deceived him in a dreadful way. He tells how in his prayer time he felt God was speaking to him. I know that this man has sinned against you and that you feel it would be unjust of Me to ask you to forgive him. I was all ears for I thought that this was surely just such a time. The Lord seemed to pause as if to ensure that He had my full attention, then He delivered the knockout blow.
Forgiveness is a process.
If we have made the choice that we want to forgive, then the process of forgiveness can start. Sometimes it may be almost instant, but it may also need time. There may be a need to work through a process of grieving over what was lost. If the action was worthy of anger that anger needs to be felt and acknowledged, not denied. People who have been abused often try to excuse the abuser's behaviour.