Tell your wife to stop being so silly. Mediation is nothing to do with the overall legal process. There is no judge or lawyers involved. The mediator is simply someone who has had a days training on how to "mediate" by phone between the parties. They have no legal authority to order anything.
DO NOT tell anyone to offer ANYTHING. What an absurd idea. Offer £0 and the whole thing will be over in less than 5 minutes.
The only "legal" requirement is to "attend" the call. There is no legal obligation to agree to anything. By having "attended" the call, nothing else is required.
I really fail to understand peoples misplaced fears about this part of the process. The mediation is NOT a trial. It is simply an unnecessary waste of everyone's time because it serves no purpose in cases like these.
So, if your wife is the defendant in the case, she must be the person "attending" the call. If she is so petrified about it and you think your daughter can handle it as her mother, then make sure that she simply offers £0.
Realistically, nothing will happen even if your wife doesn't "attend" the call. Just last week, ParkingEye failed to "attend" a call and the whole procedure simply moved on to the next stage with no repercussions.
Others will correct me if I'm wrong (mediation was still optional last time I personally went through the process) but I believe the defendant has to attend the mediation call.
Any claim issued since 22nd May 2024 includes a mandatory mediation call. The only thing "mandatory" about it is the requirement to "attend" the call. There is no requirement to participate in the mediation process. Not participating in the mediation process carries no ramifications. The call was "attended" and that's it.