For one, with my experience with kids, what they say can come out wrong and they are not good at interpreting someone else's feelings. That's putting a lot of expectations on a child. The situation with Christ and the Father is different because Christ is God. We on the other hand are human, we make mistakes and we live in sin. What you are asking sounds like you are asking a child to be Christ. God is perfect, He is the Almighty. Christ and God are one so one would have no need for one to correct the other. The only one who corrects is God through the Holy Spirit through conviction and the only thing he correct is us because we are sinful.
Whatever issues you have, you should confront either the person directly, or talk to someone in charge, such as a Pastor, counselor or boss. Children do not have the ability or maturity or understanding to be a mediator, that pressure is too much for a child and will only make matters worse. I hope this makes sense and helps you out, whatever situation you are in.
15"If your brother sins against you, go and show him his fault, just between the two of you. If he listens to you, you have won your brother over. 16But if he will not listen, take one or two others along, so that 'every matter may be established by the testimony of two or three witnesses.' 17If he refuses to listen to them, tell it to the church; and if he refuses to listen even to the church, treat him as you would a pagan or a tax collector.
18"I tell you the truth, whatever you bind on earth will be bound in heaven, and whatever you loose on earth will be loosed in heaven.
19"Again, I tell you that if two of you on earth agree about anything you ask for, it will be done for you by my Father in heaven. 20For where two or three come together in my name, there am I with them."