I am loathe to say this but mediation is all about bringing two sides together to let them negotiate their points of view and come up with an answer. If, as you say, you have done nothing wrong there would be very little for mediation to work with. You are almost implying that the fault lies totally with your child which is a very difficult place to start mediation from.
A general election (democratic eh not like Hamas) is taking place in Israel on Tuesday next week.
