Look, I appreciate the point you’re making. I can’t buy in.
You need to grieve for a while before coming to the point you forgive the person who has done something like this.
If you can say you forgive this person in almost no time at all, it’s a massive insult to your relative.
If someone does something to you, then fine. Forgive when you like. I still think it’s best to allow the reality to sink in before you wax rhapsodic about total forgiveness.
The offender needs to come to grips with what he has done. What’s the rush to short-circuit that process?
The offender is already dead. The man had his daughter killed. There is no target for his hate, the smart thing is to not let the murderer take his life as well.